title: Cant run app Nativescript on iOS but runs on android
body: <p>Cant run app Nativescript on iOS but runs on android
  My code works ok android with no problems but in iOS i get those erros below.
  and i have no ideia why, what im missing ???? Its a plugin? Module?
  Any help would be good cuz im lost here. thanks
  when i run <code>tns run ios --env.aot --env.uglify</code>.</p>
  
  <p>the erros i get when running the app :</p>
  
  <pre><code>***** Fatal JavaScript exception - application has been terminated. *****
  Native stack trace:
  1   0x10fe3991f NativeScript::reportFatalErrorBeforeShutdown(JSC::ExecState*, JSC::Exception*, bool)
  2   0x10fe71b60 NativeScript::FFICallback&lt;NativeScript::ObjCMethodCallback&gt;::ffiClosureCallback(ffi_cif*, void*, void**, void*)
  3   0x110812dd6 ffi_closure_unix64_inner
  4   0x1108137fa ffi_closure_unix64
  5   0x114515d22 -[CALayer layoutSublayers]
  6   0x11451a9fc CA::Layer::layout_if_needed(CA::Transaction*)
  7   0x114526d58 CA::Layer::layout_and_display_if_needed(CA::Transaction*)
  8   0x11449624a CA::Context::commit_transaction(CA::Transaction*)
  9   0x1144cd606 CA::Transaction::commit()
  10  0x116f942c3 __34-[UIApplication _firstCommitBlock]_block_invoke_2
  11  0x115a97cbc __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__
  12  0x115a97480 __CFRunLoopDoBlocks
  13  0x115a91d04 __CFRunLoopRun
  14  0x115a914d2 CFRunLoopRunSpecific
  15  0x11b8af2fe GSEventRunModal
  16  0x116f7afc2 UIApplicationMain
  17  0x11081363d ffi_call_unix64
  18  0x12db4cf70
  JavaScript stack trace:
  1   @file:///node_modules/tns-core-modules/ui/content-view/content-view.js:44:0
  2   _eachLayoutView@file:///node_modules/tns-core-modules/ui/core/view/view-common.js:1015:0
  3   @file:///node_modules/tns-core-modules/ui/proxy-view-container/proxy-view-container.js:45:0
  4   eachChildView@file:///node_modules/tns-core-modules/ui/layouts/layout-base-common.js:125:0
  5   _eachLayoutView@file:///node_modules/tns-core-modules/ui/proxy-view-container/proxy-view-container.js:43:0
  6   get@file:///node_modules/tns-core-modules/ui/content-view/content-view.js:38:0
  7   onMeasure@file:///node_modules/tns-core-modules/ui/page/page.js:272:0
  8   measure@file:///node_modules/tns-core-modules/ui/core/view/view.js:55:0
  9   measureChild@file:///node_modules/tns-core-modules/ui/core/view/view-common.js:954:0
  10  i@file:///node_modules/tns-core-modules/ui/core/view/view.js:636:0
  11  viewDidLayoutSubviews@file:///node_modules/tns-core-modules/ui/page/page.js:192:0
  12  UIApplicationMain@[native code]
  13  S@file:///node_modules/tns-core-modules/application/application.js:277:0
  14  run@file:///node_modules/tns-core-modules/application/application.js:305:0
  15  bootstrapNativeScriptApp@file:///node_modules/nativescript-angular/platform-common.js:205:0
  16  bootstrapApp@file:///node_modules/nativescript-angular/platform-common.js:106:0
  17  bootstrapModuleFactory@file:///node_modules/nativescript-angular/platform-common.js:77:0
  18  @file:///app/bundle.js:72:449
  19  ./main.ts@file:///app/bundle.js:72:477
  20  k@file:///src/webpack/bootstrap:750:0
  21  n@file:///src/webpack/bootstrap:43:0
  22  r@file:///src/webpack/bootstrap:30:0
  23  anonymous@file:///src/$_lazy_route_resource lazy namespace object:2:0
  24  evaluate@[nat&lt;…&gt;
  JavaScript error:
  file:///node_modules/tns-core-modules/ui/content-view/content-view.js:44:0 JS ERROR Error: More than one layout child inside a 
  1   UIApplicationMain@[native code]
  2   S@file:///node_modules/tns-core-modules/application/application.js:277:0
  3   run@file:///node_modules/tns-core-modules/application/application.js:305:0
  4   bootstrapNativeScriptApp@file:///node_modules/nativescript-angular/platform-common.js:205:0
  5   bootstrapApp@file:///node_modules/nativescript-angular/platform-common.js:106:0
  6   bootstrapModuleFactory@file:///node_modules/nativescript-angular/platform-common.js:77:0
  7   @file:///app/bundle.js:72:449
  8   ./main.ts@file:///app/bundle.js:72:477
  9   k@file:///src/webpack/bootstrap:750:0
  10  n@file:///src/webpack/bootstrap:43:0
  11  r@file:///src/webpack/bootstrap:30:0
  12  anonymous@file:///src/$_lazy_route_resource lazy namespace object:2:0
  13  evaluate@[native code]
  14  moduleEvaluation@:1:11
  15  promiseReactionJob@:1:11
  </code></pre>