<h2 dir="auto">Steps to Reproduce</h2>
<p dir="auto">If I press a button while the keyboard is on screen it gives where as if the keyboard is not on screen it does not give error</p>
<h2 dir="auto">Logs</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="V/PhoneWindow(17798): updateColorViewInt()else drawable=null color=1073741824
I/flutter (17798): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (17798): The following assertion was thrown building NotificationListener&lt;KeepAliveNotification&gt;:
I/flutter (17798): 'package:flutter/src/rendering/object.dart': Failed assertion: line 3111 pos 14:
I/flutter (17798): '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
I/flutter (17798): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (17798): more information in this error message to help you determine and fix the underlying cause.
I/flutter (17798): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (17798):   https://github.com/flutter/flutter/issues/new
I/flutter (17798): When the exception was thrown, this was the stack:
I/flutter (17798): #2      RenderSliver&amp;ContainerRenderObjectMixin._insertIntoChildList (package:flutter/src/rendering/object.dart:3111:14)
I/flutter (17798): #3      RenderSliver&amp;ContainerRenderObjectMixin.insert (package:flutter/src/rendering/object.dart:3145:5)
I/flutter (17798): #4      RenderSliverMultiBoxAdaptor.insert (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:193:17)
I/flutter (17798): #5      SliverMultiBoxAdaptorElement.insertChildRenderObject (package:flutter/src/widgets/sliver.dart:840:18)
I/flutter (17798): #6      RenderObjectElement.attachRenderObject (package:flutter/src/widgets/framework.dart:4402:35)
I/flutter (17798): #7      RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4173:5)
I/flutter (17798): #8      SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4537:16)
I/flutter (17798): #9      Element.inflateWidget (package:flutter/src/widgets/framework.dart:2900:14)
I/flutter (17798): #10     Element.updateChild (package:flutter/src/widgets/framework.dart:2703:12)
I/flutter (17798): #11     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #12     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #13     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3536:5)
I/flutter (17798): #14     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3531:5)
I/flutter (17798): #15     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2900:14)
I/flutter (17798): #16     Element.updateChild (package:flutter/src/widgets/framework.dart:2703:12)
I/flutter (17798): #17     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #18     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #19     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3536:5)
I/flutter (17798): #20     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3531:5)
I/flutter (17798): #21     ParentDataElement.mount (package:flutter/src/widgets/framework.dart:3849:16)
I/flutter (17798): #22     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2900:14)
I/flutter (17798): #23     Element.updateChild (package:flutter/src/widgets/framework.dart:2703:12)
I/flutter (17798): #24     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #25     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #26     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3536:5)
I/flutter (17798): #27     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3674:22)
I/flutter (17798): #28     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3531:5)
I/flutter (17798): #29     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2900:14)
I/flutter (17798): #30     Element.updateChild (package:flutter/src/widgets/framework.dart:2703:12)
I/flutter (17798): #31     SliverMultiBoxAdaptorElement.performRebuild (package:flutter/src/widgets/sliver.dart:696:34)
I/flutter (17798): #32     SliverMultiBoxAdaptorElement.update (package:flutter/src/widgets/sliver.dart:665:7)
I/flutter (17798): #33     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #34     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #35     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #36     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4272:32)
I/flutter (17798): #37     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4653:17)
I/flutter (17798): #38     _ViewportElement.update (package:flutter/src/widgets/viewport.dart:182:17)
I/flutter (17798): #39     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #40     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #41     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #42     ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #43     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #44     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #45     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #46     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #47     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #48     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #49     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #50     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #51     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #52     StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #53     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #54     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #55     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #56     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #57     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #58     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #59     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #60     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #61     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #62     StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #63     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #64     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #65     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #66     StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #67     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #68     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #69     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #70     StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #71     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #72     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #73     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #74     ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #75     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #76     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #77     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #78     StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #79     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #80     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #81     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #82     ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #83     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #84     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4272:32)
I/flutter (17798): #85     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4653:17)
I/flutter (17798): #86     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #87     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #88     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #89     ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #90     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #91     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #92     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #93     StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #94     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #95     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #96     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #97     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #98     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #99     StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #100    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #101    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #102    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #103    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #104    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #105    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #106    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #107    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #108    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #109    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #110    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #111    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #112    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #113    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #114    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #115    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #116    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #117    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #118    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #119    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #120    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #121    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #122    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #123    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #124    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #125    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #126    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #127    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #128    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #129    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #130    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #131    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #132    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #133    StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #134    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #135    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #136    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #137    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #138    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #139    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #140    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #141    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #142    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): USER DATA INSIDE PROFILE BUILD: 
I/flutter (17798): Arnol
I/flutter (17798): #143    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #144    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #145    StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #146    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #147    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #148    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #149    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #150    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #151    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #152    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #153    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #154    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #155    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #156    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #157    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #158    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #159    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #160    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #161    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #162    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #163    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #164    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #165    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #166    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #167    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #168    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #169    RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4272:32)
I/flutter (17798): #170    MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4653:17)
I/flutter (17798): #171    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #172    _TheatreElement.update (package:flutter/src/widgets/overlay.dart:507:16)
I/flutter (17798): #173    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #174    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #175    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #176    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #177    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #178    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #179    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #180    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #181    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #182    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #183    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #184    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #185    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #186    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #187    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #188    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #189    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #190    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #191    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #192    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #193    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #194    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2261:33)
I/flutter (17798): #195    BindingBase&amp;SchedulerBinding&amp;GestureBinding&amp;ServicesBinding&amp;RendererBinding&amp;WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:530:20)
I/flutter (17798): #196    BindingBase&amp;SchedulerBinding&amp;GestureBinding&amp;ServicesBinding&amp;RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:194:5)
I/flutter (17798): #197    BindingBase&amp;SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:713:15)
I/flutter (17798): #198    BindingBase&amp;SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:649:9)
I/flutter (17798): #199    _invoke (file:///b/build/slave/Linux_Engine/build/src/flutter/lib/ui/hooks.dart:86)
I/flutter (17798): #200    _drawFrame (file:///b/build/slave/Linux_Engine/build/src/flutter/lib/ui/hooks.dart:75)
I/flutter (17798): (elided 2 frames from class _AssertionError)
I/flutter (17798): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter (17798): Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3111 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3111 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3111 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3597 pos 12: 'child == _child': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 4565 pos 12: 'renderObject.child == child': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 4565 pos 12: 'renderObject.child == child': is not true.
I/flutter (17798): Another exception was thrown: Duplicate GlobalKey detected in widget tree."><pre class="notranslate"><code class="notranslate">V/PhoneWindow(17798): updateColorViewInt()else drawable=null color=1073741824
I/flutter (17798): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (17798): The following assertion was thrown building NotificationListener&lt;KeepAliveNotification&gt;:
I/flutter (17798): 'package:flutter/src/rendering/object.dart': Failed assertion: line 3111 pos 14:
I/flutter (17798): '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
I/flutter (17798): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (17798): more information in this error message to help you determine and fix the underlying cause.
I/flutter (17798): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (17798):   https://github.com/flutter/flutter/issues/new
I/flutter (17798): When the exception was thrown, this was the stack:
I/flutter (17798): #2      RenderSliver&amp;ContainerRenderObjectMixin._insertIntoChildList (package:flutter/src/rendering/object.dart:3111:14)
I/flutter (17798): #3      RenderSliver&amp;ContainerRenderObjectMixin.insert (package:flutter/src/rendering/object.dart:3145:5)
I/flutter (17798): #4      RenderSliverMultiBoxAdaptor.insert (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:193:17)
I/flutter (17798): #5      SliverMultiBoxAdaptorElement.insertChildRenderObject (package:flutter/src/widgets/sliver.dart:840:18)
I/flutter (17798): #6      RenderObjectElement.attachRenderObject (package:flutter/src/widgets/framework.dart:4402:35)
I/flutter (17798): #7      RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4173:5)
I/flutter (17798): #8      SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4537:16)
I/flutter (17798): #9      Element.inflateWidget (package:flutter/src/widgets/framework.dart:2900:14)
I/flutter (17798): #10     Element.updateChild (package:flutter/src/widgets/framework.dart:2703:12)
I/flutter (17798): #11     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #12     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #13     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3536:5)
I/flutter (17798): #14     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3531:5)
I/flutter (17798): #15     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2900:14)
I/flutter (17798): #16     Element.updateChild (package:flutter/src/widgets/framework.dart:2703:12)
I/flutter (17798): #17     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #18     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #19     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3536:5)
I/flutter (17798): #20     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3531:5)
I/flutter (17798): #21     ParentDataElement.mount (package:flutter/src/widgets/framework.dart:3849:16)
I/flutter (17798): #22     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2900:14)
I/flutter (17798): #23     Element.updateChild (package:flutter/src/widgets/framework.dart:2703:12)
I/flutter (17798): #24     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #25     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #26     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3536:5)
I/flutter (17798): #27     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3674:22)
I/flutter (17798): #28     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3531:5)
I/flutter (17798): #29     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2900:14)
I/flutter (17798): #30     Element.updateChild (package:flutter/src/widgets/framework.dart:2703:12)
I/flutter (17798): #31     SliverMultiBoxAdaptorElement.performRebuild (package:flutter/src/widgets/sliver.dart:696:34)
I/flutter (17798): #32     SliverMultiBoxAdaptorElement.update (package:flutter/src/widgets/sliver.dart:665:7)
I/flutter (17798): #33     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #34     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #35     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #36     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4272:32)
I/flutter (17798): #37     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4653:17)
I/flutter (17798): #38     _ViewportElement.update (package:flutter/src/widgets/viewport.dart:182:17)
I/flutter (17798): #39     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #40     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #41     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #42     ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #43     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #44     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #45     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #46     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #47     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #48     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #49     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #50     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #51     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #52     StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #53     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #54     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #55     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #56     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #57     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #58     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #59     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #60     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #61     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #62     StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #63     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #64     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #65     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #66     StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #67     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #68     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #69     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #70     StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #71     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #72     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #73     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #74     ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #75     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #76     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #77     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #78     StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #79     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #80     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #81     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #82     ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #83     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #84     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4272:32)
I/flutter (17798): #85     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4653:17)
I/flutter (17798): #86     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #87     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #88     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #89     ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #90     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #91     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #92     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #93     StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #94     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #95     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #96     Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #97     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #98     Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #99     StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #100    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #101    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #102    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #103    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #104    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #105    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #106    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #107    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #108    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #109    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #110    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #111    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #112    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #113    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #114    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #115    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #116    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #117    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #118    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #119    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #120    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #121    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #122    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #123    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #124    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #125    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #126    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #127    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #128    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #129    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #130    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #131    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #132    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #133    StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #134    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #135    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #136    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #137    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #138    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #139    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #140    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #141    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #142    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): USER DATA INSIDE PROFILE BUILD: 
I/flutter (17798): Arnol
I/flutter (17798): #143    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #144    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #145    StatelessElement.update (package:flutter/src/widgets/framework.dart:3618:5)
I/flutter (17798): #146    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #147    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #148    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #149    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #150    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #151    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #152    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #153    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #154    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #155    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #156    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #157    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #158    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #159    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #160    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #161    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #162    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #163    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #164    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #165    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #166    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #167    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #168    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #169    RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4272:32)
I/flutter (17798): #170    MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4653:17)
I/flutter (17798): #171    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #172    _TheatreElement.update (package:flutter/src/widgets/overlay.dart:507:16)
I/flutter (17798): #173    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #174    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #175    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #176    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #177    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #178    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #179    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #180    ProxyElement.update (package:flutter/src/widgets/framework.dart:3803:5)
I/flutter (17798): #181    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #182    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #183    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #184    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #185    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #186    StatefulElement.update (package:flutter/src/widgets/framework.dart:3693:5)
I/flutter (17798): #187    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #188    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #189    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #190    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4545:14)
I/flutter (17798): #191    Element.updateChild (package:flutter/src/widgets/framework.dart:2692:15)
I/flutter (17798): #192    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3568:16)
I/flutter (17798): #193    Element.rebuild (package:flutter/src/widgets/framework.dart:3457:5)
I/flutter (17798): #194    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2261:33)
I/flutter (17798): #195    BindingBase&amp;SchedulerBinding&amp;GestureBinding&amp;ServicesBinding&amp;RendererBinding&amp;WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:530:20)
I/flutter (17798): #196    BindingBase&amp;SchedulerBinding&amp;GestureBinding&amp;ServicesBinding&amp;RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:194:5)
I/flutter (17798): #197    BindingBase&amp;SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:713:15)
I/flutter (17798): #198    BindingBase&amp;SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:649:9)
I/flutter (17798): #199    _invoke (file:///b/build/slave/Linux_Engine/build/src/flutter/lib/ui/hooks.dart:86)
I/flutter (17798): #200    _drawFrame (file:///b/build/slave/Linux_Engine/build/src/flutter/lib/ui/hooks.dart:75)
I/flutter (17798): (elided 2 frames from class _AssertionError)
I/flutter (17798): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter (17798): Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3111 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3111 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3111 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3459 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3597 pos 12: 'child == _child': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 4565 pos 12: 'renderObject.child == child': is not true.
I/flutter (17798): Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 4565 pos 12: 'renderObject.child == child': is not true.
I/flutter (17798): Another exception was thrown: Duplicate GlobalKey detected in widget tree.
</code></pre></div>
<h2 dir="auto">Flutter Doctor</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[✓] Flutter (on Linux, locale en_IN, channel alpha)
    • Flutter at /home/****/workspace/Flutter/flutter
    • Framework revision 701d534ba9 (2 weeks ago), 2017-09-12 14:01:51 -0700
    • Engine revision 31d03de019
    • Tools Dart version 1.25.0-dev.11.0

[✓] Android toolchain - develop for Android devices (Android SDK 26.0.1)
    • Android SDK at /home/nonstopio/Android/Sdk
    • Platform android-26, build-tools 26.0.1
    • Java binary at: /usr/lib/jvm/java-8-oracle/bin/java
    • Java version Java(TM) SE Runtime Environment (build 1.8.0_144-b01)

[-] Android Studio (version 2.1)
    • Android Studio at /home/nonstopio/Android/AND STUDIO/androidstudio/android-studio
    ✗ Unable to find bundled Java version.
    • Try updating or re-installing Android Studio.

[✓] IntelliJ IDEA Community Edition (version 2017.2)
    • Flutter plugin version 17.0
    • Dart plugin version 172.4155.35

[✓] Connected devices
    • Lenovo A6000 • **** • android-arm • Android 5.0.2 (API 21)"><pre class="notranslate"><code class="notranslate">[✓] Flutter (on Linux, locale en_IN, channel alpha)
    • Flutter at /home/****/workspace/Flutter/flutter
    • Framework revision 701d534ba9 (2 weeks ago), 2017-09-12 14:01:51 -0700
    • Engine revision 31d03de019
    • Tools Dart version 1.25.0-dev.11.0

[✓] Android toolchain - develop for Android devices (Android SDK 26.0.1)
    • Android SDK at /home/nonstopio/Android/Sdk
    • Platform android-26, build-tools 26.0.1
    • Java binary at: /usr/lib/jvm/java-8-oracle/bin/java
    • Java version Java(TM) SE Runtime Environment (build 1.8.0_144-b01)

[-] Android Studio (version 2.1)
    • Android Studio at /home/nonstopio/Android/AND STUDIO/androidstudio/android-studio
    ✗ Unable to find bundled Java version.
    • Try updating or re-installing Android Studio.

[✓] IntelliJ IDEA Community Edition (version 2017.2)
    • Flutter plugin version 17.0
    • Dart plugin version 172.4155.35

[✓] Connected devices
    • Lenovo A6000 • **** • android-arm • Android 5.0.2 (API 21)
</code></pre></div>
<blockquote>
<p dir="auto">For more information about diagnosing and reporting Flutter bugs, please see <a href="https://flutter.io/bug-reports/" rel="nofollow">https://flutter.io/bug-reports/</a>.</p>
</blockquote>
<h2 dir="auto">Steps to Reproduce</h2>
<p dir="auto">I have a PageView that contains the top level widgets for my app, with switching between them controlled by a BottomNavBar. As per <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/Hixie/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/Hixie">@Hixie</a>'s advice in the chat, I am adding <code class="notranslate">AutomaticKeepAliveClientMixin</code> to these top level widgets so the PageView won't recycle them and will preserve state. After I added this to the main widget that contains a network loaded ListView, on occasion when switching back to this ListView from another tab I get this failed assertion in the framework.</p>
<h2 dir="auto">Logs</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following assertion was thrown building NotificationListener&lt;KeepAliveNotification&gt;:
'package:flutter/src/rendering/object.dart': Failed assertion: line 3031 pos 14:
'_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
Either the assertion indicates an error in the framework itself, or we should provide substantially
more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
  https://github.com/flutter/flutter/issues/new
When the exception was thrown, this was the stack:
#2      RenderSliver&amp;ContainerRenderObjectMixin._insertIntoChildList (package:flutter/src/rendering/object.dart:3031:14)
#3      RenderSliver&amp;ContainerRenderObjectMixin.insert (package:flutter/src/rendering/object.dart:3065:5)
#4      RenderSliverMultiBoxAdaptor.insert (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:193:17)
#5      SliverMultiBoxAdaptorElement.insertChildRenderObject (package:flutter/src/widgets/sliver.dart:840:18)
#6      RenderObjectElement.attachRenderObject (package:flutter/src/widgets/framework.dart:4380:35)
#7      RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4151:5)
#8      SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4515:16)
#9      Element.inflateWidget (package:flutter/src/widgets/framework.dart:2882:14)
#10     Element.updateChild (package:flutter/src/widgets/framework.dart:2685:12)
#11     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#12     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#13     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3514:5)
#14     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3509:5)
#15     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2882:14)
#16     Element.updateChild (package:flutter/src/widgets/framework.dart:2685:12)
#17     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#18     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#19     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3514:5)
#20     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3509:5)
#21     ParentDataElement.mount (package:flutter/src/widgets/framework.dart:3827:16)
#22     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2882:14)
#23     Element.updateChild (package:flutter/src/widgets/framework.dart:2685:12)
#24     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#25     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#26     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3514:5)
#27     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3652:22)
#28     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3509:5)
#29     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2882:14)
#30     Element.updateChild (package:flutter/src/widgets/framework.dart:2685:12)
#31     SliverMultiBoxAdaptorElement.performRebuild (package:flutter/src/widgets/sliver.dart:696:34)
#32     SliverMultiBoxAdaptorElement.update (package:flutter/src/widgets/sliver.dart:665:7)
#33     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#34     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4250:32)
#35     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4631:17)
#36     _ViewportElement.update (package:flutter/src/widgets/viewport.dart:150:17)
#37     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#38     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#39     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#40     ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#41     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#42     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#43     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#44     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#45     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#46     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#47     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#48     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#49     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#50     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#51     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#52     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#53     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#54     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#55     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#56     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#57     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#58     StatelessElement.update (package:flutter/src/widgets/framework.dart:3596:5)
#59     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#60     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#61     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#62     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#63     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#64     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#65     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#66     ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#67     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#68     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4250:32)
#69     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4631:17)
#70     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#71     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#72     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#73     ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#74     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#75     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#76     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#77     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#78     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#79     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#80     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#81     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#82     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#83     StatelessElement.update (package:flutter/src/widgets/framework.dart:3596:5)
#84     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#85     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#86     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#87     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#88     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#89     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#90     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#91     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#92     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#93     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#94     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#95     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#96     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#97     ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#98     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#99     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#100    Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#101    ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#102    Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#103    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#104    Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#105    StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#106    Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#107    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#108    Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#109    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2260:33)
#110    BindingBase&amp;SchedulerBinding&amp;GestureBinding&amp;ServicesBinding&amp;RendererBinding&amp;WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:503:20)
#111    BindingBase&amp;SchedulerBinding&amp;GestureBinding&amp;ServicesBinding&amp;RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:189:5)
#112    BindingBase&amp;SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:695:15)
#113    BindingBase&amp;SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:643:9)
#114    _invoke (file:///b/build/slave/Mac_Engine/build/src/flutter/lib/ui/hooks.dart:86)
#115    _drawFrame (file:///b/build/slave/Mac_Engine/build/src/flutter/lib/ui/hooks.dart:75)
(elided 2 frames from class _AssertionError)
════════════════════════════════════════════════════════════════════════════════════════════════════
Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3031 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3031 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true."><pre class="notranslate"><code class="notranslate">══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following assertion was thrown building NotificationListener&lt;KeepAliveNotification&gt;:
'package:flutter/src/rendering/object.dart': Failed assertion: line 3031 pos 14:
'_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
Either the assertion indicates an error in the framework itself, or we should provide substantially
more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
  https://github.com/flutter/flutter/issues/new
When the exception was thrown, this was the stack:
#2      RenderSliver&amp;ContainerRenderObjectMixin._insertIntoChildList (package:flutter/src/rendering/object.dart:3031:14)
#3      RenderSliver&amp;ContainerRenderObjectMixin.insert (package:flutter/src/rendering/object.dart:3065:5)
#4      RenderSliverMultiBoxAdaptor.insert (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:193:17)
#5      SliverMultiBoxAdaptorElement.insertChildRenderObject (package:flutter/src/widgets/sliver.dart:840:18)
#6      RenderObjectElement.attachRenderObject (package:flutter/src/widgets/framework.dart:4380:35)
#7      RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4151:5)
#8      SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4515:16)
#9      Element.inflateWidget (package:flutter/src/widgets/framework.dart:2882:14)
#10     Element.updateChild (package:flutter/src/widgets/framework.dart:2685:12)
#11     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#12     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#13     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3514:5)
#14     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3509:5)
#15     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2882:14)
#16     Element.updateChild (package:flutter/src/widgets/framework.dart:2685:12)
#17     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#18     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#19     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3514:5)
#20     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3509:5)
#21     ParentDataElement.mount (package:flutter/src/widgets/framework.dart:3827:16)
#22     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2882:14)
#23     Element.updateChild (package:flutter/src/widgets/framework.dart:2685:12)
#24     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#25     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#26     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3514:5)
#27     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3652:22)
#28     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3509:5)
#29     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2882:14)
#30     Element.updateChild (package:flutter/src/widgets/framework.dart:2685:12)
#31     SliverMultiBoxAdaptorElement.performRebuild (package:flutter/src/widgets/sliver.dart:696:34)
#32     SliverMultiBoxAdaptorElement.update (package:flutter/src/widgets/sliver.dart:665:7)
#33     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#34     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4250:32)
#35     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4631:17)
#36     _ViewportElement.update (package:flutter/src/widgets/viewport.dart:150:17)
#37     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#38     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#39     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#40     ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#41     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#42     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#43     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#44     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#45     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#46     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#47     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#48     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#49     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#50     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#51     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#52     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#53     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#54     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#55     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#56     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#57     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#58     StatelessElement.update (package:flutter/src/widgets/framework.dart:3596:5)
#59     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#60     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#61     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#62     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#63     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#64     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#65     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#66     ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#67     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#68     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:4250:32)
#69     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4631:17)
#70     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#71     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#72     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#73     ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#74     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#75     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#76     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#77     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#78     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#79     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#80     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#81     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#82     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#83     StatelessElement.update (package:flutter/src/widgets/framework.dart:3596:5)
#84     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#85     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4523:14)
#86     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#87     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#88     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#89     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#90     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#91     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#92     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#93     StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#94     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#95     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#96     Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#97     ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#98     Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#99     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#100    Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#101    ProxyElement.update (package:flutter/src/widgets/framework.dart:3781:5)
#102    Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#103    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#104    Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#105    StatefulElement.update (package:flutter/src/widgets/framework.dart:3671:5)
#106    Element.updateChild (package:flutter/src/widgets/framework.dart:2674:15)
#107    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3546:16)
#108    Element.rebuild (package:flutter/src/widgets/framework.dart:3435:5)
#109    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2260:33)
#110    BindingBase&amp;SchedulerBinding&amp;GestureBinding&amp;ServicesBinding&amp;RendererBinding&amp;WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:503:20)
#111    BindingBase&amp;SchedulerBinding&amp;GestureBinding&amp;ServicesBinding&amp;RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:189:5)
#112    BindingBase&amp;SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:695:15)
#113    BindingBase&amp;SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:643:9)
#114    _invoke (file:///b/build/slave/Mac_Engine/build/src/flutter/lib/ui/hooks.dart:86)
#115    _drawFrame (file:///b/build/slave/Mac_Engine/build/src/flutter/lib/ui/hooks.dart:75)
(elided 2 frames from class _AssertionError)
════════════════════════════════════════════════════════════════════════════════════════════════════
Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3031 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
Another exception was thrown: 'package:flutter/src/rendering/object.dart': Failed assertion: line 3031 pos 14: '_debugUltimatePreviousSiblingOf(after, equals: _firstChild)': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
Another exception was thrown: 'package:flutter/src/widgets/framework.dart': Failed assertion: line 3437 pos 14: 'owner._debugCurrentBuildTarget == this': is not true.
</code></pre></div>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Analyzing /Users/matt/code/flutter/kudos...
  lint • Don't import implementation files from another package at lib/feed.dart:5:8 • implementation_imports
  lint • Close instances of `dart.core.Sink` at lib/feed.dart:26:26 • close_sinks
  lint • Don't explicitly initialize variables to null at lib/loading_list_view.dart:23:5 • avoid_init_to_null
  lint • Don't import implementation files from another package at lib/post.dart:3:8 • implementation_imports
  hint • Unused import at lib/application.dart:4:8 • unused_import
  hint • Unused import at lib/feed.dart:2:8 • unused_import
  hint • Unused import at lib/feed.dart:5:8 • unused_import
  hint • Unused import at lib/feed.dart:7:8 • unused_import
  hint • Unused import at lib/feed.dart:12:8 • unused_import
  hint • Unused import at lib/feed.dart:13:8 • unused_import
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/feed.dart:29:8 • must_call_super
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/feed.dart:40:8 • must_call_super
  hint • The type parameter 'widgetAdapter' is annotated with @required but only named parameters without default value can be annotated with it at lib/loading_list_view.dart:23:5 • invalid_required_param
  hint • Unused import at lib/main.dart:6:8 • unused_import
  hint • The value of the field '_counter' isn't used at lib/main.dart:56:7 • unused_field
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/main.dart:63:8 • must_call_super
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/main.dart:71:8 • must_call_super
  hint • The method '_incrementCounter' isn't used at lib/main.dart:76:8 • unused_element
  hint • Unused import at lib/post.dart:7:8 • unused_import
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/post.dart:10:7 • must_be_immutable
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/post.dart:34:7 • must_be_immutable
  hint • The value of the local variable 'plainText' isn't used at lib/post.dart:71:10 • unused_local_variable
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/post.dart:112:7 • must_be_immutable
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/post.dart:160:7 • must_be_immutable
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/profile.dart:10:7 • must_be_immutable
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/profile.dart:27:10 • must_call_super
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/profile.dart:145:7 • must_be_immutable
  hint • The class '_KudosEarned' isn't used at lib/profile.dart:218:7 • unused_element
  hint • Unused import at lib/send_photo.dart:5:8 • unused_import
  hint • Unused import at lib/usersearch.dart:6:8 • unused_import
  hint • Unused import at lib/usersearch.dart:7:8 • unused_import
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/usersearch.dart:25:10 • must_call_super
32 issues found."><pre class="notranslate"><code class="notranslate">Analyzing /Users/matt/code/flutter/kudos...
  lint • Don't import implementation files from another package at lib/feed.dart:5:8 • implementation_imports
  lint • Close instances of `dart.core.Sink` at lib/feed.dart:26:26 • close_sinks
  lint • Don't explicitly initialize variables to null at lib/loading_list_view.dart:23:5 • avoid_init_to_null
  lint • Don't import implementation files from another package at lib/post.dart:3:8 • implementation_imports
  hint • Unused import at lib/application.dart:4:8 • unused_import
  hint • Unused import at lib/feed.dart:2:8 • unused_import
  hint • Unused import at lib/feed.dart:5:8 • unused_import
  hint • Unused import at lib/feed.dart:7:8 • unused_import
  hint • Unused import at lib/feed.dart:12:8 • unused_import
  hint • Unused import at lib/feed.dart:13:8 • unused_import
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/feed.dart:29:8 • must_call_super
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/feed.dart:40:8 • must_call_super
  hint • The type parameter 'widgetAdapter' is annotated with @required but only named parameters without default value can be annotated with it at lib/loading_list_view.dart:23:5 • invalid_required_param
  hint • Unused import at lib/main.dart:6:8 • unused_import
  hint • The value of the field '_counter' isn't used at lib/main.dart:56:7 • unused_field
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/main.dart:63:8 • must_call_super
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/main.dart:71:8 • must_call_super
  hint • The method '_incrementCounter' isn't used at lib/main.dart:76:8 • unused_element
  hint • Unused import at lib/post.dart:7:8 • unused_import
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/post.dart:10:7 • must_be_immutable
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/post.dart:34:7 • must_be_immutable
  hint • The value of the local variable 'plainText' isn't used at lib/post.dart:71:10 • unused_local_variable
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/post.dart:112:7 • must_be_immutable
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/post.dart:160:7 • must_be_immutable
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/profile.dart:10:7 • must_be_immutable
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/profile.dart:27:10 • must_call_super
  hint • This class inherits from a class marked as @immutable, and therefore should be immutable (all instance fields must be final) at lib/profile.dart:145:7 • must_be_immutable
  hint • The class '_KudosEarned' isn't used at lib/profile.dart:218:7 • unused_element
  hint • Unused import at lib/send_photo.dart:5:8 • unused_import
  hint • Unused import at lib/usersearch.dart:6:8 • unused_import
  hint • Unused import at lib/usersearch.dart:7:8 • unused_import
  hint • This method overrides a method annotated as @mustCallSuper in 'State', but does not invoke the overridden method at lib/usersearch.dart:25:10 • must_call_super
32 issues found.
</code></pre></div>
<h2 dir="auto">Flutter Doctor</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[✓] Flutter (on Mac OS X 10.12.6 16G29, locale en-US, channel alpha)
    • Flutter at /Users/matt/code/flutter/flutter
    • Framework revision b156a0f054 (3 weeks ago), 2017-08-11 22:01:40 -0700
    • Engine revision fef7d827d6
    • Tools Dart version 1.25.0-dev.9.0

[✓] Android toolchain - develop for Android devices (Android SDK 25.0.3)
    • Android SDK at /Users/matt/code/android/android
    • Platform android-25, build-tools 25.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] iOS toolchain - develop for iOS devices (Xcode 8.3.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 8.3.3, Build version 8E3004b
    • ios-deploy 1.9.1
    • CocoaPods version 1.3.1

[✓] Android Studio (version 2.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] IntelliJ IDEA Ultimate Edition (version 2017.2.2)
    • Flutter plugin version 16.0
    • Dart plugin version 172.3757.55

[✓] Connected devices
    • iPhone 6s • 3DF999CB-1CD6-4649-8187-DDEFBDB14DFA • ios • iOS 10.3 (simulator)
"><pre class="notranslate"><code class="notranslate">[✓] Flutter (on Mac OS X 10.12.6 16G29, locale en-US, channel alpha)
    • Flutter at /Users/matt/code/flutter/flutter
    • Framework revision b156a0f054 (3 weeks ago), 2017-08-11 22:01:40 -0700
    • Engine revision fef7d827d6
    • Tools Dart version 1.25.0-dev.9.0

[✓] Android toolchain - develop for Android devices (Android SDK 25.0.3)
    • Android SDK at /Users/matt/code/android/android
    • Platform android-25, build-tools 25.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] iOS toolchain - develop for iOS devices (Xcode 8.3.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 8.3.3, Build version 8E3004b
    • ios-deploy 1.9.1
    • CocoaPods version 1.3.1

[✓] Android Studio (version 2.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] IntelliJ IDEA Ultimate Edition (version 2017.2.2)
    • Flutter plugin version 16.0
    • Dart plugin version 172.3757.55

[✓] Connected devices
    • iPhone 6s • 3DF999CB-1CD6-4649-8187-DDEFBDB14DFA • ios • iOS 10.3 (simulator)

</code></pre></div>
<blockquote>
<p dir="auto">For more information about diagnosing and reporting Flutter bugs, please see <a href="https://flutter.io/bug-reports/" rel="nofollow">https://flutter.io/bug-reports/</a>.</p>
</blockquote>