<h2 dir="auto">Steps to Reproduce</h2>
<p dir="auto">Configuring <code class="notranslate">TargetPlatform.iOS</code> problems will appear</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="MaterialApp(
      title: 'app,
      theme: new ThemeData(
        primarySwatch: Colors.red,
        platform: TargetPlatform.iOS, //  ------&gt;&gt;&gt;&gt;&gt; 
      ),
      navigatorObservers: &lt;NavigatorObserver&gt;[observers],
      onGenerateRoute: Application.router.generator,
      home: MyHomePage(title: 'app'),
)"><pre class="notranslate"><code class="notranslate">MaterialApp(
      title: 'app,
      theme: new ThemeData(
        primarySwatch: Colors.red,
        platform: TargetPlatform.iOS, //  ------&gt;&gt;&gt;&gt;&gt; 
      ),
      navigatorObservers: &lt;NavigatorObserver&gt;[observers],
      onGenerateRoute: Application.router.generator,
      home: MyHomePage(title: 'app'),
)
</code></pre></div>
<h2 dir="auto">Logs</h2>
<h3 dir="auto">flutter doctor</h3>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel dev, v0.11.3, on Mac OS X 10.13.6 17G3025, locale
    zh-Hans-CN)
[!] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    ✗ Android license status unknown.
[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[✓] Android Studio (version 3.2)
[✓] VS Code (version 1.28.2)
[✓] Connected device (1 available)"><pre class="notranslate"><code class="notranslate">Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel dev, v0.11.3, on Mac OS X 10.13.6 17G3025, locale
    zh-Hans-CN)
[!] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    ✗ Android license status unknown.
[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[✓] Android Studio (version 3.2)
[✓] VS Code (version 1.28.2)
[✓] Connected device (1 available)
</code></pre></div>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="I/flutter (28074): ══╡ EXCEPTION CAUGHT BY FLUTTER FRAMEWORK ╞═════════════════════════════════════════════════════════
I/flutter (28074): The following assertion was thrown during a service extension callback for
I/flutter (28074): &quot;ext.flutter.inspector.getRootWidgetSummaryTree&quot;:
I/flutter (28074): 'package:flutter/src/material/typography.dart': Failed assertion: line 121 pos 14: 'black != null':
I/flutter (28074): is not true.
I/flutter (28074): 
I/flutter (28074): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (28074): more information in this error message to help you determine and fix the underlying cause.
I/flutter (28074): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (28074):   https://github.com/flutter/flutter/issues/new?template=BUG.md
I/flutter (28074): 
I/flutter (28074): When the exception was thrown, this was the stack:
I/flutter (28074): #2      new Typography._ (package:flutter/src/material/typography.dart:121:14)
I/flutter (28074): #3      new Typography (package:flutter/src/material/typography.dart:117:23)
I/flutter (28074): #4      Typography.debugFillProperties (package:flutter/src/material/typography.dart:254:42)
I/flutter (28074): #5      DiagnosticableNode._builder (package:flutter/src/foundation/diagnostics.dart:1983:14)
I/flutter (28074): #6      DiagnosticableNode.getProperties (package:flutter/src/foundation/diagnostics.dart:1996:44)
I/flutter (28074): #7      DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:899:46)
I/flutter (28074): #8      DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #9      Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
I/flutter (28074): #10     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
I/flutter (28074): #11     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
I/flutter (28074): #12     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
I/flutter (28074): #13     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #14     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
I/flutter (28074): #15     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #16     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
I/flutter (28074): #17     _StringBase._interpolate (dart:core/runtime/libstring_patch.dart:827:19)
I/flutter (28074): #18     Tween.toString (package:flutter/src/animation/tween.dart:264:58)
I/flutter (28074): #19     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
I/flutter (28074): #20     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
I/flutter (28074): #21     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
I/flutter (28074): #22     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #23     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
I/flutter (28074): #24     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #25     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
I/flutter (28074): #26     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
I/flutter (28074): #27     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
I/flutter (28074): #28     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
I/flutter (28074): #29     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #30     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
I/flutter (28074): #31     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #32     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
I/flutter (28074): #33     DiagnosticsNode.toJsonMap (package:flutter/src/foundation/diagnostics.dart:771:30)
I/flutter (28074): #34     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1389:43)
I/flutter (28074): #35     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1523:16)
I/flutter (28074): #36     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
I/flutter (28074): #37     ListIterable.toList (dart:_internal/iterable.dart:219:19)
I/flutter (28074): #38     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1528:10)
I/flutter (28074): #39     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1421:26)
I/flutter (28074): #40     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1523:16)
I/flutter (28074): #41     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
I/flutter (28074): #42     ListIterable.toList (dart:_internal/iterable.dart:219:19)
I/flutter (28074): #43     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1528:10)
I/flutter (28074): #44     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1421:26)
I/flutter (28074): #45     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1523:16)
I/flutter (28074): #46     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
I/flutter (28074): #47     ListIterable.toList (dart:_internal/iterable.dart:219:19)
I/flutter (28074): #48     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1528:10)
I/flutter (28074): #49     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1421:26)
I/flutter (28074): #50     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1523:16)
I/flutter (28074): #51     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
I/flutter (28074): #52     ListIterable.toList (dart:_internal/iterable.dart:219:19)
I/flutter (28074): #53     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1528:10)
I/flutter (28074): #54     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1421:26)
I/flutter (28074): #55     _WidgetInspectorService._getRootWidgetSummaryTree (package:flutter/src/widgets/widget_inspector.dart:1643:12)
I/flutter (28074): #56     _WidgetInspectorService._registerObjectGroupServiceExtension.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:843:57)
I/flutter (28074): &lt;asynchronous suspension&gt;
I/flutter (28074): #57     BindingBase.registerServiceExtension.&lt;anonymous closure&gt; (package:flutter/src/foundation/binding.dart:438:32)
I/flutter (28074): &lt;asynchronous suspension&gt;
I/flutter (28074): #58     _runExtension (dart:developer/runtime/libdeveloper.dart:86:23)
I/flutter (28074): (elided 2 frames from class _AssertionError)
I/flutter (28074): ════════════════════════════════════════════════════════════════════════════════════════════════════
Error -32000 received from application: Server error"><pre class="notranslate"><code class="notranslate">I/flutter (28074): ══╡ EXCEPTION CAUGHT BY FLUTTER FRAMEWORK ╞═════════════════════════════════════════════════════════
I/flutter (28074): The following assertion was thrown during a service extension callback for
I/flutter (28074): "ext.flutter.inspector.getRootWidgetSummaryTree":
I/flutter (28074): 'package:flutter/src/material/typography.dart': Failed assertion: line 121 pos 14: 'black != null':
I/flutter (28074): is not true.
I/flutter (28074): 
I/flutter (28074): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (28074): more information in this error message to help you determine and fix the underlying cause.
I/flutter (28074): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (28074):   https://github.com/flutter/flutter/issues/new?template=BUG.md
I/flutter (28074): 
I/flutter (28074): When the exception was thrown, this was the stack:
I/flutter (28074): #2      new Typography._ (package:flutter/src/material/typography.dart:121:14)
I/flutter (28074): #3      new Typography (package:flutter/src/material/typography.dart:117:23)
I/flutter (28074): #4      Typography.debugFillProperties (package:flutter/src/material/typography.dart:254:42)
I/flutter (28074): #5      DiagnosticableNode._builder (package:flutter/src/foundation/diagnostics.dart:1983:14)
I/flutter (28074): #6      DiagnosticableNode.getProperties (package:flutter/src/foundation/diagnostics.dart:1996:44)
I/flutter (28074): #7      DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:899:46)
I/flutter (28074): #8      DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #9      Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
I/flutter (28074): #10     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
I/flutter (28074): #11     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
I/flutter (28074): #12     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
I/flutter (28074): #13     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #14     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
I/flutter (28074): #15     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #16     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
I/flutter (28074): #17     _StringBase._interpolate (dart:core/runtime/libstring_patch.dart:827:19)
I/flutter (28074): #18     Tween.toString (package:flutter/src/animation/tween.dart:264:58)
I/flutter (28074): #19     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
I/flutter (28074): #20     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
I/flutter (28074): #21     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
I/flutter (28074): #22     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #23     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
I/flutter (28074): #24     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #25     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
I/flutter (28074): #26     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
I/flutter (28074): #27     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
I/flutter (28074): #28     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
I/flutter (28074): #29     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #30     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
I/flutter (28074): #31     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
I/flutter (28074): #32     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
I/flutter (28074): #33     DiagnosticsNode.toJsonMap (package:flutter/src/foundation/diagnostics.dart:771:30)
I/flutter (28074): #34     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1389:43)
I/flutter (28074): #35     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1523:16)
I/flutter (28074): #36     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
I/flutter (28074): #37     ListIterable.toList (dart:_internal/iterable.dart:219:19)
I/flutter (28074): #38     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1528:10)
I/flutter (28074): #39     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1421:26)
I/flutter (28074): #40     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1523:16)
I/flutter (28074): #41     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
I/flutter (28074): #42     ListIterable.toList (dart:_internal/iterable.dart:219:19)
I/flutter (28074): #43     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1528:10)
I/flutter (28074): #44     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1421:26)
I/flutter (28074): #45     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1523:16)
I/flutter (28074): #46     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
I/flutter (28074): #47     ListIterable.toList (dart:_internal/iterable.dart:219:19)
I/flutter (28074): #48     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1528:10)
I/flutter (28074): #49     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1421:26)
I/flutter (28074): #50     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1523:16)
I/flutter (28074): #51     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
I/flutter (28074): #52     ListIterable.toList (dart:_internal/iterable.dart:219:19)
I/flutter (28074): #53     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1528:10)
I/flutter (28074): #54     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1421:26)
I/flutter (28074): #55     _WidgetInspectorService._getRootWidgetSummaryTree (package:flutter/src/widgets/widget_inspector.dart:1643:12)
I/flutter (28074): #56     _WidgetInspectorService._registerObjectGroupServiceExtension.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:843:57)
I/flutter (28074): &lt;asynchronous suspension&gt;
I/flutter (28074): #57     BindingBase.registerServiceExtension.&lt;anonymous closure&gt; (package:flutter/src/foundation/binding.dart:438:32)
I/flutter (28074): &lt;asynchronous suspension&gt;
I/flutter (28074): #58     _runExtension (dart:developer/runtime/libdeveloper.dart:86:23)
I/flutter (28074): (elided 2 frames from class _AssertionError)
I/flutter (28074): ════════════════════════════════════════════════════════════════════════════════════════════════════
Error -32000 received from application: Server error
</code></pre></div>
<h2 dir="auto">Steps to Reproduce</h2>
<ol dir="auto">
<li>Run this demo app:</li>
</ol>
<div class="highlight highlight-source-dart notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

void main() =&gt; runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final platform = defaultTargetPlatform;

    final companyBlackMountainView = Typography.blackMountainView.copyWith(
      caption: Typography.blackMountainView.caption.copyWith(
        color: Color(0x99020303),
      ),
    );

    final companyBlackCupertino = Typography.blackCupertino.copyWith(
      caption: Typography.blackCupertino.caption.copyWith(
        color: Color(0x99020303),
      ),
    );

    TextTheme black;
    TextTheme white;

    switch (platform) {
      case TargetPlatform.iOS:
        black = companyBlackCupertino;
        white = Typography.whiteCupertino;
        break;
      case TargetPlatform.android:
      case TargetPlatform.fuchsia:
        black = companyBlackMountainView;
        white = Typography.whiteMountainView;
    }

    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        typography: Typography(
          platform: defaultTargetPlatform,
          englishLike: Typography.englishLike2018,
          dense: Typography.dense2018,
          tall: Typography.tall2018,
          black: black,
          white: white,
        ),
      ),
      home: Container(),
    );
  }
}"><pre class="notranslate"><span class="pl-k">import</span> <span class="pl-s">'package:flutter/foundation.dart'</span>;
<span class="pl-k">import</span> <span class="pl-s">'package:flutter/material.dart'</span>;

<span class="pl-k">void</span> <span class="pl-en">main</span>() <span class="pl-k">=&gt;</span> <span class="pl-en">runApp</span>(<span class="pl-c1">MyApp</span>());

<span class="pl-k">class</span> <span class="pl-c1">MyApp</span> <span class="pl-k">extends</span> <span class="pl-c1">StatelessWidget</span> {
  <span class="pl-k">@override</span>
  <span class="pl-c1">Widget</span> <span class="pl-en">build</span>(<span class="pl-c1">BuildContext</span> context) {
    <span class="pl-k">final</span> platform <span class="pl-k">=</span> defaultTargetPlatform;

    <span class="pl-k">final</span> companyBlackMountainView <span class="pl-k">=</span> <span class="pl-c1">Typography</span>.blackMountainView.<span class="pl-en">copyWith</span>(
      caption<span class="pl-k">:</span> <span class="pl-c1">Typography</span>.blackMountainView.caption.<span class="pl-en">copyWith</span>(
        color<span class="pl-k">:</span> <span class="pl-c1">Color</span>(<span class="pl-c1">0x99020303</span>),
      ),
    );

    <span class="pl-k">final</span> companyBlackCupertino <span class="pl-k">=</span> <span class="pl-c1">Typography</span>.blackCupertino.<span class="pl-en">copyWith</span>(
      caption<span class="pl-k">:</span> <span class="pl-c1">Typography</span>.blackCupertino.caption.<span class="pl-en">copyWith</span>(
        color<span class="pl-k">:</span> <span class="pl-c1">Color</span>(<span class="pl-c1">0x99020303</span>),
      ),
    );

    <span class="pl-c1">TextTheme</span> black;
    <span class="pl-c1">TextTheme</span> white;

    <span class="pl-k">switch</span> (platform) {
      <span class="pl-k">case</span> <span class="pl-c1">TargetPlatform</span>.iOS<span class="pl-k">:</span>
        black <span class="pl-k">=</span> companyBlackCupertino;
        white <span class="pl-k">=</span> <span class="pl-c1">Typography</span>.whiteCupertino;
        <span class="pl-k">break</span>;
      <span class="pl-k">case</span> <span class="pl-c1">TargetPlatform</span>.android<span class="pl-k">:</span>
      <span class="pl-k">case</span> <span class="pl-c1">TargetPlatform</span>.fuchsia<span class="pl-k">:</span>
        black <span class="pl-k">=</span> companyBlackMountainView;
        white <span class="pl-k">=</span> <span class="pl-c1">Typography</span>.whiteMountainView;
    }

    <span class="pl-k">return</span> <span class="pl-c1">MaterialApp</span>(
      title<span class="pl-k">:</span> <span class="pl-s">'Flutter Demo'</span>,
      theme<span class="pl-k">:</span> <span class="pl-c1">ThemeData</span>(
        primarySwatch<span class="pl-k">:</span> <span class="pl-c1">Colors</span>.blue,
        typography<span class="pl-k">:</span> <span class="pl-c1">Typography</span>(
          platform<span class="pl-k">:</span> defaultTargetPlatform,
          englishLike<span class="pl-k">:</span> <span class="pl-c1">Typography</span>.englishLike2018,
          dense<span class="pl-k">:</span> <span class="pl-c1">Typography</span>.dense2018,
          tall<span class="pl-k">:</span> <span class="pl-c1">Typography</span>.tall2018,
          black<span class="pl-k">:</span> black,
          white<span class="pl-k">:</span> white,
        ),
      ),
      home<span class="pl-k">:</span> <span class="pl-c1">Container</span>(),
    );
  }
}</pre></div>
<ol start="2" dir="auto">
<li>In console this error is registered:</li>
</ol>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="11:16:46.458 5 info flutter.tools flutter: ══╡ EXCEPTION CAUGHT BY FLUTTER FRAMEWORK ╞═════════════════════════════════════════════════════════
11:16:46.458 6 info flutter.tools flutter: The following assertion was thrown during a service extension callback for
11:16:46.458 7 info flutter.tools flutter: &quot;ext.flutter.inspector.getRootWidgetSummaryTree&quot;:
11:16:46.458 8 info flutter.tools flutter: 'package:flutter/src/material/typography.dart': Failed assertion: line 121 pos 14: 'black != null':
11:16:46.458 9 info flutter.tools flutter: is not true.
11:16:46.458 10 info flutter.tools flutter:
11:16:46.458 11 info flutter.tools flutter: Either the assertion indicates an error in the framework itself, or we should provide substantially
11:16:46.458 12 info flutter.tools flutter: more information in this error message to help you determine and fix the underlying cause.
11:16:46.458 13 info flutter.tools flutter: In either case, please report this assertion by filing a bug on GitHub:
11:16:46.458 14 info flutter.tools flutter:   https://github.com/flutter/flutter/issues/new?template=BUG.md
11:16:46.458 15 info flutter.tools flutter:
11:16:46.458 16 info flutter.tools flutter: When the exception was thrown, this was the stack:
11:16:46.431 17 finer runtime.gc collection time 59ms • 28.7MB used of 32.7MB • isolates/177527503
11:16:46.464 18 info flutter.tools flutter: #2      new Typography._ (package:flutter/src/material/typography.dart:121:14)
11:16:46.464 19 info flutter.tools flutter: #3      new Typography (package:flutter/src/material/typography.dart:117:23)
11:16:46.464 20 info flutter.tools flutter: #4      Typography.debugFillProperties (package:flutter/src/material/typography.dart:254:42)
11:16:46.464 21 info flutter.tools flutter: #5      DiagnosticableNode._builder (package:flutter/src/foundation/diagnostics.dart:1983:14)
11:16:46.464 22 info flutter.tools flutter: #6      DiagnosticableNode.getProperties (package:flutter/src/foundation/diagnostics.dart:1996:44)
11:16:46.464 23 info flutter.tools flutter: #7      DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:899:46)
11:16:46.464 24 info flutter.tools flutter: #8      DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.464 25 info flutter.tools flutter: #9      Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
11:16:46.465 26 info flutter.tools flutter: #10     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
11:16:46.465 27 info flutter.tools flutter: #11     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
11:16:46.465 28 info flutter.tools flutter: #12     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
11:16:46.465 29 info flutter.tools flutter: #13     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.465 30 info flutter.tools flutter: #14     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
11:16:46.465 31 info flutter.tools flutter: #15     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.465 32 info flutter.tools flutter: #16     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
11:16:46.465 33 info flutter.tools flutter: #17     _StringBase._interpolate (dart:core/runtime/libstring_patch.dart:827:19)
11:16:46.465 34 info flutter.tools flutter: #18     Tween.toString (package:flutter/src/animation/tween.dart:264:58)
11:16:46.466 35 info flutter.tools flutter: #19     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
11:16:46.466 36 info flutter.tools flutter: #20     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
11:16:46.466 37 info flutter.tools flutter: #21     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
11:16:46.466 38 info flutter.tools flutter: #22     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.466 39 info flutter.tools flutter: #23     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
11:16:46.467 40 info flutter.tools flutter: #24     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.467 41 info flutter.tools flutter: #25     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
11:16:46.467 42 info flutter.tools flutter: #26     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
11:16:46.467 43 info flutter.tools flutter: #27     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
11:16:46.467 44 info flutter.tools flutter: #28     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
11:16:46.467 45 info flutter.tools flutter: #29     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.469 46 info flutter.tools flutter: #30     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
11:16:46.469 47 info flutter.tools flutter: #31     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.469 48 info flutter.tools flutter: #32     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
11:16:46.469 49 info flutter.tools flutter: #33     DiagnosticsNode.toJsonMap (package:flutter/src/foundation/diagnostics.dart:771:30)
11:16:46.469 50 info flutter.tools flutter: #34     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1390:43)
11:16:46.469 51 info flutter.tools flutter: #35     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1524:16)
11:16:46.469 52 info flutter.tools flutter: #36     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
11:16:46.470 53 info flutter.tools flutter: #37     ListIterable.toList (dart:_internal/iterable.dart:219:19)
11:16:46.470 54 info flutter.tools flutter: #38     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1529:10)
11:16:46.470 55 info flutter.tools flutter: #39     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1422:26)
11:16:46.470 56 info flutter.tools flutter: #40     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1524:16)
11:16:46.470 57 info flutter.tools flutter: #41     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
11:16:46.470 58 info flutter.tools flutter: #42     ListIterable.toList (dart:_internal/iterable.dart:219:19)
11:16:46.472 59 info flutter.tools flutter: #43     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1529:10)
11:16:46.472 60 info flutter.tools flutter: #44     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1422:26)
11:16:46.472 61 info flutter.tools flutter: #45     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1524:16)
11:16:46.472 62 info flutter.tools flutter: #46     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
11:16:46.473 63 info flutter.tools flutter: #47     ListIterable.toList (dart:_internal/iterable.dart:219:19)
11:16:46.473 64 info flutter.tools flutter: #48     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1529:10)
11:16:46.473 65 info flutter.tools flutter: #49     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1422:26)
11:16:46.473 66 info flutter.tools flutter: #50     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1524:16)
11:16:46.473 67 info flutter.tools flutter: #51     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
11:16:46.481 68 info flutter.tools flutter: #52     ListIterable.toList (dart:_internal/iterable.dart:219:19)
11:16:46.481 69 info flutter.tools flutter: #53     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1529:10)
11:16:46.481 70 info flutter.tools flutter: #54     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1422:26)
11:16:46.481 71 info flutter.tools flutter: #55     _WidgetInspectorService._getRootWidgetSummaryTree (package:flutter/src/widgets/widget_inspector.dart:1644:12)
11:16:46.481 72 info flutter.tools flutter: #56     _WidgetInspectorService._registerObjectGroupServiceExtension.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:843:57)
11:16:46.481 73 info flutter.tools flutter: &lt;asynchronous suspension&gt;
11:16:46.481 74 info flutter.tools flutter: #57     BindingBase.registerServiceExtension.&lt;anonymous closure&gt; (package:flutter/src/foundation/binding.dart:438:32)
11:16:46.481 75 info flutter.tools flutter: &lt;asynchronous suspension&gt;
11:16:46.481 76 info flutter.tools flutter: #58     _runExtension (dart:developer/runtime/libdeveloper.dart:86:23)
11:16:46.481 77 info flutter.tools flutter: (elided 2 frames from class _AssertionError)
11:16:46.481 78 info flutter.tools flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════
11:16:46.497 79 info flutter.tools Error -32000 received from application: Server error
"><pre class="notranslate"><code class="notranslate">11:16:46.458 5 info flutter.tools flutter: ══╡ EXCEPTION CAUGHT BY FLUTTER FRAMEWORK ╞═════════════════════════════════════════════════════════
11:16:46.458 6 info flutter.tools flutter: The following assertion was thrown during a service extension callback for
11:16:46.458 7 info flutter.tools flutter: "ext.flutter.inspector.getRootWidgetSummaryTree":
11:16:46.458 8 info flutter.tools flutter: 'package:flutter/src/material/typography.dart': Failed assertion: line 121 pos 14: 'black != null':
11:16:46.458 9 info flutter.tools flutter: is not true.
11:16:46.458 10 info flutter.tools flutter:
11:16:46.458 11 info flutter.tools flutter: Either the assertion indicates an error in the framework itself, or we should provide substantially
11:16:46.458 12 info flutter.tools flutter: more information in this error message to help you determine and fix the underlying cause.
11:16:46.458 13 info flutter.tools flutter: In either case, please report this assertion by filing a bug on GitHub:
11:16:46.458 14 info flutter.tools flutter:   https://github.com/flutter/flutter/issues/new?template=BUG.md
11:16:46.458 15 info flutter.tools flutter:
11:16:46.458 16 info flutter.tools flutter: When the exception was thrown, this was the stack:
11:16:46.431 17 finer runtime.gc collection time 59ms • 28.7MB used of 32.7MB • isolates/177527503
11:16:46.464 18 info flutter.tools flutter: #2      new Typography._ (package:flutter/src/material/typography.dart:121:14)
11:16:46.464 19 info flutter.tools flutter: #3      new Typography (package:flutter/src/material/typography.dart:117:23)
11:16:46.464 20 info flutter.tools flutter: #4      Typography.debugFillProperties (package:flutter/src/material/typography.dart:254:42)
11:16:46.464 21 info flutter.tools flutter: #5      DiagnosticableNode._builder (package:flutter/src/foundation/diagnostics.dart:1983:14)
11:16:46.464 22 info flutter.tools flutter: #6      DiagnosticableNode.getProperties (package:flutter/src/foundation/diagnostics.dart:1996:44)
11:16:46.464 23 info flutter.tools flutter: #7      DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:899:46)
11:16:46.464 24 info flutter.tools flutter: #8      DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.464 25 info flutter.tools flutter: #9      Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
11:16:46.465 26 info flutter.tools flutter: #10     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
11:16:46.465 27 info flutter.tools flutter: #11     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
11:16:46.465 28 info flutter.tools flutter: #12     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
11:16:46.465 29 info flutter.tools flutter: #13     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.465 30 info flutter.tools flutter: #14     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
11:16:46.465 31 info flutter.tools flutter: #15     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.465 32 info flutter.tools flutter: #16     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
11:16:46.465 33 info flutter.tools flutter: #17     _StringBase._interpolate (dart:core/runtime/libstring_patch.dart:827:19)
11:16:46.465 34 info flutter.tools flutter: #18     Tween.toString (package:flutter/src/animation/tween.dart:264:58)
11:16:46.466 35 info flutter.tools flutter: #19     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
11:16:46.466 36 info flutter.tools flutter: #20     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
11:16:46.466 37 info flutter.tools flutter: #21     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
11:16:46.466 38 info flutter.tools flutter: #22     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.466 39 info flutter.tools flutter: #23     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
11:16:46.467 40 info flutter.tools flutter: #24     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.467 41 info flutter.tools flutter: #25     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
11:16:46.467 42 info flutter.tools flutter: #26     DiagnosticsProperty.valueToString (package:flutter/src/foundation/diagnostics.dart:1808:60)
11:16:46.467 43 info flutter.tools flutter: #27     DiagnosticsProperty.toDescription (package:flutter/src/foundation/diagnostics.dart:1822:21)
11:16:46.467 44 info flutter.tools flutter: #28     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:879:32)
11:16:46.467 45 info flutter.tools flutter: #29     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.469 46 info flutter.tools flutter: #30     DiagnosticsNode.toStringDeep (package:flutter/src/foundation/diagnostics.dart:940:39)
11:16:46.469 47 info flutter.tools flutter: #31     DiagnosticsNode.toString (package:flutter/src/foundation/diagnostics.dart:795:14)
11:16:46.469 48 info flutter.tools flutter: #32     Diagnosticable.toString (package:flutter/src/foundation/diagnostics.dart:2131:70)
11:16:46.469 49 info flutter.tools flutter: #33     DiagnosticsNode.toJsonMap (package:flutter/src/foundation/diagnostics.dart:771:30)
11:16:46.469 50 info flutter.tools flutter: #34     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1390:43)
11:16:46.469 51 info flutter.tools flutter: #35     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1524:16)
11:16:46.469 52 info flutter.tools flutter: #36     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
11:16:46.470 53 info flutter.tools flutter: #37     ListIterable.toList (dart:_internal/iterable.dart:219:19)
11:16:46.470 54 info flutter.tools flutter: #38     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1529:10)
11:16:46.470 55 info flutter.tools flutter: #39     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1422:26)
11:16:46.470 56 info flutter.tools flutter: #40     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1524:16)
11:16:46.470 57 info flutter.tools flutter: #41     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
11:16:46.470 58 info flutter.tools flutter: #42     ListIterable.toList (dart:_internal/iterable.dart:219:19)
11:16:46.472 59 info flutter.tools flutter: #43     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1529:10)
11:16:46.472 60 info flutter.tools flutter: #44     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1422:26)
11:16:46.472 61 info flutter.tools flutter: #45     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1524:16)
11:16:46.472 62 info flutter.tools flutter: #46     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
11:16:46.473 63 info flutter.tools flutter: #47     ListIterable.toList (dart:_internal/iterable.dart:219:19)
11:16:46.473 64 info flutter.tools flutter: #48     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1529:10)
11:16:46.473 65 info flutter.tools flutter: #49     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1422:26)
11:16:46.473 66 info flutter.tools flutter: #50     _WidgetInspectorService._nodesToJson.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:1524:16)
11:16:46.473 67 info flutter.tools flutter: #51     MappedListIterable.elementAt (dart:_internal/iterable.dart:414:29)
11:16:46.481 68 info flutter.tools flutter: #52     ListIterable.toList (dart:_internal/iterable.dart:219:19)
11:16:46.481 69 info flutter.tools flutter: #53     _WidgetInspectorService._nodesToJson (package:flutter/src/widgets/widget_inspector.dart:1529:10)
11:16:46.481 70 info flutter.tools flutter: #54     _WidgetInspectorService._nodeToJson (package:flutter/src/widgets/widget_inspector.dart:1422:26)
11:16:46.481 71 info flutter.tools flutter: #55     _WidgetInspectorService._getRootWidgetSummaryTree (package:flutter/src/widgets/widget_inspector.dart:1644:12)
11:16:46.481 72 info flutter.tools flutter: #56     _WidgetInspectorService._registerObjectGroupServiceExtension.&lt;anonymous closure&gt; (package:flutter/src/widgets/widget_inspector.dart:843:57)
11:16:46.481 73 info flutter.tools flutter: &lt;asynchronous suspension&gt;
11:16:46.481 74 info flutter.tools flutter: #57     BindingBase.registerServiceExtension.&lt;anonymous closure&gt; (package:flutter/src/foundation/binding.dart:438:32)
11:16:46.481 75 info flutter.tools flutter: &lt;asynchronous suspension&gt;
11:16:46.481 76 info flutter.tools flutter: #58     _runExtension (dart:developer/runtime/libdeveloper.dart:86:23)
11:16:46.481 77 info flutter.tools flutter: (elided 2 frames from class _AssertionError)
11:16:46.481 78 info flutter.tools flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════
11:16:46.497 79 info flutter.tools Error -32000 received from application: Server error

</code></pre></div>
<h2 dir="auto">Logs</h2>

<h3 dir="auto">flutter analyze</h3>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Analyzing typography_bug ...
No issues found! (ran in 1.5s)"><pre class="notranslate"><code class="notranslate">Analyzing typography_bug ...
No issues found! (ran in 1.5s)
</code></pre></div>
<h3 dir="auto">flutter doctor -v</h3>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[✓] Flutter (Channel beta, v0.11.12, on Mac OS X 10.14.1 18B75, locale en-LT)
    • Flutter version 0.11.12 at /Users/ts/Documents/flutter
    • Framework revision 06ec8d3b41 (9 hours ago), 2018-11-28 15:56:58 -0800
    • Engine revision 72c7a75672
    • Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    • Android SDK at /Users/ts/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
    • All Android licenses accepted.

[!] iOS toolchain - develop for iOS devices (Xcode 10.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.1, Build version 10B61
    ✗ Verify that all connected devices have been paired with this computer in Xcode.
      If all devices have been paired, libimobiledevice and ideviceinstaller may require updating.
      To update with Brew, run:
        brew update
        brew uninstall --ignore-dependencies libimobiledevice
        brew uninstall --ignore-dependencies usbmuxd
        brew install --HEAD usbmuxd
        brew unlink usbmuxd
        brew link usbmuxd
        brew install --HEAD libimobiledevice
        brew install ideviceinstaller
    • ios-deploy 1.9.4
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 31.0.1
    • Dart plugin version 181.5656
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)

[!] VS Code (version 1.29.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension not installed; install from
      https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (1 available)
    • iPhone XR • D64AFDE4-43A3-46CA-96A7-2C2698A20144 • ios • iOS 12.1 (simulator)

! Doctor found issues in 2 categories."><pre class="notranslate"><code class="notranslate">[✓] Flutter (Channel beta, v0.11.12, on Mac OS X 10.14.1 18B75, locale en-LT)
    • Flutter version 0.11.12 at /Users/ts/Documents/flutter
    • Framework revision 06ec8d3b41 (9 hours ago), 2018-11-28 15:56:58 -0800
    • Engine revision 72c7a75672
    • Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    • Android SDK at /Users/ts/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
    • All Android licenses accepted.

[!] iOS toolchain - develop for iOS devices (Xcode 10.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.1, Build version 10B61
    ✗ Verify that all connected devices have been paired with this computer in Xcode.
      If all devices have been paired, libimobiledevice and ideviceinstaller may require updating.
      To update with Brew, run:
        brew update
        brew uninstall --ignore-dependencies libimobiledevice
        brew uninstall --ignore-dependencies usbmuxd
        brew install --HEAD usbmuxd
        brew unlink usbmuxd
        brew link usbmuxd
        brew install --HEAD libimobiledevice
        brew install ideviceinstaller
    • ios-deploy 1.9.4
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 31.0.1
    • Dart plugin version 181.5656
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)

[!] VS Code (version 1.29.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension not installed; install from
      https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (1 available)
    • iPhone XR • D64AFDE4-43A3-46CA-96A7-2C2698A20144 • ios • iOS 12.1 (simulator)

! Doctor found issues in 2 categories.
</code></pre></div>