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[pointer_interceptor][canvaskit] Using pointer_interceptor with Canvaskit throws The following TypeErrorImpl was thrown during a scheduler callback: Unexpected null value. #94945

@sperochon

Description

@sperochon

Steps to Reproduce

  1. Create a new project with the code sample
  2. Add folder shim from official example here
  3. Execute flutter run -d chrome
  4. Wait 3 seconds and see an exception in logs

The same code without PointerInterceptor does not crash.

Expected results:
No exception

Actual results:

======== Exception caught by scheduler library =====================================================
The following TypeErrorImpl was thrown during a scheduler callback:
Unexpected null value.

When the exception was thrown, this was the stack: 
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 251:49      throw_
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 528:63  nullCheck
lib/_engine/engine/canvaskit/embedded_views.dart 479:74                           submitFrame
lib/_engine/engine/canvaskit/rasterizer.dart 36:33                                draw
lib/_engine/engine/platform_dispatcher.dart 579:7                                 render
lib/ui/src/ui/window.dart 93:50                                                   render
packages/flutter/src/rendering/view.dart 229:15                                   compositeFrame
packages/flutter/src/rendering/binding.dart 501:18                                drawFrame
packages/flutter/src/widgets/binding.dart 883:13                                  drawFrame
packages/flutter/src/rendering/binding.dart 363:5                                 [_handlePersistentFrameCallback]
packages/flutter/src/scheduler/binding.dart 1145:15                               [_invokeFrameCallback]
packages/flutter/src/scheduler/binding.dart 1082:9                                handleDrawFrame
packages/flutter/src/scheduler/binding.dart 996:5                                 [_handleDrawFrame]
lib/_engine/engine/platform_dispatcher.dart 1005:13                               invoke
lib/_engine/engine/platform_dispatcher.dart 159:5                                 invokeOnDrawFrame
lib/_engine/engine.dart 455:45                                                    <fn>
===========================================================================================
Code sample

import 'dart:html' as html;

import 'package:pointer_interceptor/pointer_interceptor.dart';
import 'shim/dart_ui.dart' as ui;

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: HomeScreen());
  }
}

class HomeScreen extends StatefulWidget {
  const HomeScreen({Key? key}) : super(key: key);

  @override
  _HomeScreenState createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  final _keyHtml = UniqueKey();
  final _keyChild = UniqueKey();
  final _childPage = const Text('Test');
  bool _childPageInFront = true;

  @override
  void initState() {
    super.initState();

    ui.platformViewRegistry.registerViewFactory(
        'iframe-web',
        (int viewId) => html.IFrameElement()
          ..name = 'iframe_web'
          ..width = '100%'
          ..height = '100%'
          ..style.width = '100%'
          ..style.height = '100%'
          ..style.backgroundColor = '#fabada');

    Future.delayed(const Duration(seconds: 3), () {
      setState(() {
        _childPageInFront = false;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Stack(children: [
        if (!_childPageInFront)
          Positioned.fill(
              key: _keyChild,
              left: 260,
              child: PointerInterceptor(child: _childPage)),
        HtmlElementView(key: _keyHtml, viewType: 'iframe-web'),
        if (_childPageInFront)
          Positioned.fill(
              key: _keyChild,
              left: 260,
              child: PointerInterceptor(child: _childPage)),
      ]),
    );
  }
}
flutter analyze
Analyzing test28...                                                     

   info • Avoid using web-only libraries outside Flutter web plugin packages • lib/main.dart:3:1 • avoid_web_libraries_in_flutter

1 issue found. (ran in 1.6s)
flutter doctor -v
[✓] Flutter (Channel stable, 2.8.0, on macOS 12.0.1 21A559 darwin-arm, locale fr-FR)
    • Flutter version 2.8.0 at /Users/seb/dev/sdk/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision cf44000065 (20 hours ago), 2021-12-08 14:06:50 -0800
    • Engine revision 40a99c5951
    • Dart version 2.15.0

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/seb/dev/sdk/android
    • Platform android-31, build-tools 31.0.0
    • ANDROID_SDK_ROOT = /Users/seb/dev/sdk/android/
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • CocoaPods version 1.11.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2020.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)

[✓] VS Code (version 1.62.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension can be installed from:
      🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (1 available)
    • Chrome (web) • chrome • web-javascript • Google Chrome 96.0.4664.93

• No issues found!
Logs
[  +30 ms] Exit code 0 from: sysctl hw.optional.arm64
[   +3 ms] hw.optional.arm64: 1
[   +9 ms] executing: [/Users/seb/dev/sdk/flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
[  +17 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[        ] cf4400006550b70f28e4b4af815151d1e74846c6
[        ] executing: [/Users/seb/dev/sdk/flutter/] git tag --points-at cf4400006550b70f28e4b4af815151d1e74846c6
[  +22 ms] Exit code 0 from: git tag --points-at cf4400006550b70f28e4b4af815151d1e74846c6
[        ] 2.8.0
[  +11 ms] executing: [/Users/seb/dev/sdk/flutter/] git rev-parse --abbrev-ref --symbolic @{u}
[  +17 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[        ] origin/stable
[        ] executing: [/Users/seb/dev/sdk/flutter/] git ls-remote --get-url origin
[  +22 ms] Exit code 0 from: git ls-remote --get-url origin
[        ] https://github.com/flutter/flutter.git
[ +138 ms] executing: [/Users/seb/dev/sdk/flutter/] git rev-parse --abbrev-ref HEAD
[  +24 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[        ] stable
[   +7 ms] executing: sw_vers -productName
[  +19 ms] Exit code 0 from: sw_vers -productName
[        ] macOS
[        ] executing: sw_vers -productVersion
[  +18 ms] Exit code 0 from: sw_vers -productVersion
[   +6 ms] 12.0.1
[        ] executing: sw_vers -buildVersion
[  +17 ms] Exit code 0 from: sw_vers -buildVersion
[        ] 21A559
[  +59 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[   +2 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'WindowsUwpEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[  +48 ms] executing: /Users/seb/dev/sdk/android/platform-tools/adb devices -l
[  +19 ms] executing: sysctl hw.optional.arm64
[  +10 ms] Exit code 0 from: sysctl hw.optional.arm64
[        ] hw.optional.arm64: 1
[        ] executing: /usr/bin/arch -arm64e xcrun xcodebuild -version
[  +88 ms] Exit code 0 from: /usr/bin/arch -arm64e xcrun xcodebuild -version
[        ] Xcode 13.1
           Build version 13A1030d
[   +4 ms] executing: /usr/bin/arch -arm64e xcrun xcdevice list --timeout 2
[   +4 ms] /usr/bin/arch -arm64e xcrun simctl list --json devices
[        ] executing: /usr/bin/arch -arm64e xcrun simctl list --json devices
[   +4 ms] executing: /usr/bin/arch -arm64e xcrun simctl list
[  +73 ms] Exit code 0 from: /usr/bin/arch -arm64e xcrun simctl list
[   +1 ms] == Device Types ==
           iPhone 4s (com.apple.CoreSimulator.SimDeviceType.iPhone-4s)
           iPhone 5 (com.apple.CoreSimulator.SimDeviceType.iPhone-5)
           iPhone 5s (com.apple.CoreSimulator.SimDeviceType.iPhone-5s)
           iPhone 6 Plus (com.apple.CoreSimulator.SimDeviceType.iPhone-6-Plus)
           iPhone 6 (com.apple.CoreSimulator.SimDeviceType.iPhone-6)
           iPhone 6s (com.apple.CoreSimulator.SimDeviceType.iPhone-6s)
           iPhone 6s Plus (com.apple.CoreSimulator.SimDeviceType.iPhone-6s-Plus)
           iPhone SE (1st generation) (com.apple.CoreSimulator.SimDeviceType.iPhone-SE)
           iPhone 7 (com.apple.CoreSimulator.SimDeviceType.iPhone-7)
           iPhone 7 Plus (com.apple.CoreSimulator.SimDeviceType.iPhone-7-Plus)
           iPhone 8 (com.apple.CoreSimulator.SimDeviceType.iPhone-8)
           iPhone 8 Plus (com.apple.CoreSimulator.SimDeviceType.iPhone-8-Plus)
           iPhone X (com.apple.CoreSimulator.SimDeviceType.iPhone-X)
           iPhone Xs (com.apple.CoreSimulator.SimDeviceType.iPhone-XS)
           iPhone Xs Max (com.apple.CoreSimulator.SimDeviceType.iPhone-XS-Max)
           iPhone Xʀ (com.apple.CoreSimulator.SimDeviceType.iPhone-XR)
           iPhone 11 (com.apple.CoreSimulator.SimDeviceType.iPhone-11)
           iPhone 11 Pro (com.apple.CoreSimulator.SimDeviceType.iPhone-11-Pro)
           iPhone 11 Pro Max (com.apple.CoreSimulator.SimDeviceType.iPhone-11-Pro-Max)
           iPhone SE (2nd generation) (com.apple.CoreSimulator.SimDeviceType.iPhone-SE--2nd-generation-)
           iPhone 12 mini (com.apple.CoreSimulator.SimDeviceType.iPhone-12-mini)
           iPhone 12 (com.apple.CoreSimulator.SimDeviceType.iPhone-12)
           iPhone 12 Pro (com.apple.CoreSimulator.SimDeviceType.iPhone-12-Pro)
           iPhone 12 Pro Max (com.apple.CoreSimulator.SimDeviceType.iPhone-12-Pro-Max)
           iPhone 13 Pro (com.apple.CoreSimulator.SimDeviceType.iPhone-13-Pro)
           iPhone 13 Pro Max (com.apple.CoreSimulator.SimDeviceType.iPhone-13-Pro-Max)
           iPhone 13 mini (com.apple.CoreSimulator.SimDeviceType.iPhone-13-mini)
           iPhone 13 (com.apple.CoreSimulator.SimDeviceType.iPhone-13)
           iPod touch (7th generation) (com.apple.CoreSimulator.SimDeviceType.iPod-touch--7th-generation-)
           iPad 2 (com.apple.CoreSimulator.SimDeviceType.iPad-2)
           iPad Retina (com.apple.CoreSimulator.SimDeviceType.iPad-Retina)
           iPad Air (com.apple.CoreSimulator.SimDeviceType.iPad-Air)
           iPad mini 2 (com.apple.CoreSimulator.SimDeviceType.iPad-mini-2)
           iPad mini 3 (com.apple.CoreSimulator.SimDeviceType.iPad-mini-3)
           iPad mini 4 (com.apple.CoreSimulator.SimDeviceType.iPad-mini-4)
           iPad Air 2 (com.apple.CoreSimulator.SimDeviceType.iPad-Air-2)
           iPad Pro (9.7-inch) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro--9-7-inch-)
           iPad Pro (12.9-inch) (1st generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro)
           iPad (5th generation) (com.apple.CoreSimulator.SimDeviceType.iPad--5th-generation-)
           iPad Pro (12.9-inch) (2nd generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro--12-9-inch---2nd-generation-)
           iPad Pro (10.5-inch) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro--10-5-inch-)
           iPad (6th generation) (com.apple.CoreSimulator.SimDeviceType.iPad--6th-generation-)
           iPad (7th generation) (com.apple.CoreSimulator.SimDeviceType.iPad--7th-generation-)
           iPad Pro (11-inch) (1st generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro--11-inch-)
           iPad Pro (12.9-inch) (3rd generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro--12-9-inch---3rd-generation-)
           iPad Pro (11-inch) (2nd generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro--11-inch---2nd-generation-)
           iPad Pro (12.9-inch) (4th generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro--12-9-inch---4th-generation-)
           iPad mini (5th generation) (com.apple.CoreSimulator.SimDeviceType.iPad-mini--5th-generation-)
           iPad Air (3rd generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Air--3rd-generation-)
           iPad (8th generation) (com.apple.CoreSimulator.SimDeviceType.iPad--8th-generation-)
           iPad (9th generation) (com.apple.CoreSimulator.SimDeviceType.iPad-9th-generation)
           iPad Air (4th generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Air--4th-generation-)
           iPad Pro (11-inch) (3rd generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro-11-inch-3rd-generation)
           iPad Pro (12.9-inch) (5th generation) (com.apple.CoreSimulator.SimDeviceType.iPad-Pro-12-9-inch-5th-generation)
           iPad mini (6th generation) (com.apple.CoreSimulator.SimDeviceType.iPad-mini-6th-generation)
           Apple TV (com.apple.CoreSimulator.SimDeviceType.Apple-TV-1080p)
           Apple TV 4K (com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-4K)
           Apple TV 4K (at 1080p) (com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-1080p)
           Apple TV 4K (2nd generation) (com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-2nd-generation-4K)
           Apple TV 4K (at 1080p) (2nd generation) (com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-2nd-generation-1080p)
           Apple Watch - 38mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-38mm)
           Apple Watch - 42mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-42mm)
           Apple Watch Series 2 - 38mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-2-38mm)
           Apple Watch Series 2 - 42mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-2-42mm)
           Apple Watch Series 3 - 38mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-3-38mm)
           Apple Watch Series 3 - 42mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-3-42mm)
           Apple Watch Series 4 - 40mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-4-40mm)
           Apple Watch Series 4 - 44mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-4-44mm)
           Apple Watch Series 5 - 40mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-5-40mm)
           Apple Watch Series 5 - 44mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-5-44mm)
           Apple Watch SE - 40mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-SE-40mm)
           Apple Watch SE - 44mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-SE-44mm)
           Apple Watch Series 6 - 40mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-6-40mm)
           Apple Watch Series 6 - 44mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-6-44mm)
           Apple Watch Series 7 - 41mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-7-41mm)
           Apple Watch Series 7 - 45mm (com.apple.CoreSimulator.SimDeviceType.Apple-Watch-Series-7-45mm)
           == Runtimes ==
           iOS 15.0 (15.0 - 19A339) - com.apple.CoreSimulator.SimRuntime.iOS-15-0
           tvOS 15.0 (15.0 - 19J344) - com.apple.CoreSimulator.SimRuntime.tvOS-15-0
           watchOS 8.0 (8.0 - 19R345) - com.apple.CoreSimulator.SimRuntime.watchOS-8-0
           == Devices ==
           -- iOS 15.0 --
               iPhone 8 (68446C3E-0CF1-45FA-8FB8-09B0D6A08FBB) (Shutdown) 
               iPhone 8 Plus (D59EB8AD-2B66-446E-A450-DB078A281888) (Shutdown) 
               iPhone 11 (0051E7DC-DA8A-423B-8699-2027EA5335E1) (Shutdown) 
               iPhone 11 Pro (5F247EFC-3EB5-49C6-A410-A808412A5ED7) (Shutdown) 
               iPhone 11 Pro Max (93549FF1-AFA4-45B1-9C2E-87C083F85113) (Shutdown) 
               iPhone SE (2nd generation) (5CF89046-1ED0-4933-9DB0-E610AD72D4E9) (Shutdown) 
               iPhone 12 mini (7223C257-6282-4AD7-97F5-0BA17BE4C0D7) (Shutdown) 
               iPhone 12 (2765DB87-86B8-4F5C-82EB-2EE8BA42E7DD) (Shutdown) 
               iPhone 12 Pro (B1ACDD94-009D-4D2A-AE14-22B73855FC59) (Shutdown) 
               iPhone 12 Pro Max (9B3751B0-D834-42BE-A6A3-13E5D9733D48) (Shutdown) 
               iPhone 13 Pro (A756A1D9-5185-4B4A-931F-320297AF98D4) (Shutdown) 
               iPhone 13 Pro Max (EA393477-70A5-4AFB-AEFF-C2A9777FAE95) (Shutdown) 
               iPhone 13 mini (8B8F0A4E-7A69-443C-83FD-83789FE11C04) (Shutdown) 
               iPhone 13 (54C038FD-6835-499C-ADF9-ABD1D556ED4D) (Shutdown) 
               iPod touch (7th generation) (3E5AFA8A-A0CA-4844-8CBF-348D55D8DCC6) (Shutdown) 
               iPad Pro (9.7-inch) (829D7FF6-29DD-4FB8-BA92-73118831442E) (Shutdown) 
               iPad (9th generation) (82C3B149-CBC0-4B58-9E1C-7D5451512169) (Shutdown) 
               iPad Air (4th generation) (0FE689DF-DB68-42B4-A07F-C081126E1BFA) (Shutdown) 
               iPad Pro (11-inch) (3rd generation) (8A58216B-8A9C-4EA2-AB98-FEA5B55D3AA6) (Shutdown) 
               iPad Pro (12.9-inch) (5th generation) (45092A4F-4A17-4B6A-B642-8B670CC74813) (Shutdown) 
               iPad mini (6th generation) (AD1D8563-5030-458B-A26D-6D5821D2BDE4) (Shutdown) 
           -- tvOS 15.0 --
               Apple TV (1CC7A93F-BE14-4E68-82CD-855AA400BE98) (Shutdown) 
               Apple TV 4K (2nd generation) (FE1DE336-96AA-4BB8-B945-A6A1F86C0345) (Shutdown) 
               Apple TV 4K (at 1080p) (2nd generation) (ACB2C531-7FBE-4584-90A7-9EB83A08F5E5) (Shutdown) 
           -- watchOS 8.0 --
               Apple Watch Series 5 - 40mm (08D342A3-C3EF-4F58-B3C9-1D07B1570800) (Shutdown) 
               Apple Watch Series 5 - 44mm (56BA1687-AC01-4457-A61B-A3EDFCAE6177) (Shutdown) 
               Apple Watch Series 6 - 40mm (F9D5AA75-ED52-4EBE-A7CB-7A26B71BE474) (Shutdown) 
               Apple Watch Series 6 - 44mm (E23ACCF7-89F7-4FD3-A3D6-4675B4CB91DC) (Shutdown) 
               Apple Watch Series 7 - 41mm (08136502-6FEF-4544-9210-35EDBFF15D4B) (Shutdown) 
               Apple Watch Series 7 - 45mm (14BA7B08-FEF1-4DB8-95A5-F7CC5600E578) (Shutdown) 
           == Device Pairs ==
           D4EC8244-D1B8-46CB-8E6C-9B24AEB70FCF (active, disconnected)
               Watch: Apple Watch Series 5 - 40mm (08D342A3-C3EF-4F58-B3C9-1D07B1570800) (Shutdown)
               Phone: iPhone 12 Pro (B1ACDD94-009D-4D2A-AE14-22B73855FC59) (Shutdown)
           170EF23A-301D-4BB8-AACB-390D43041B60 (active, disconnected)
               Watch: Apple Watch Series 5 - 44mm (56BA1687-AC01-4457-A61B-A3EDFCAE6177) (Shutdown)
               Phone: iPhone 12 Pro Max (9B3751B0-D834-42BE-A6A3-13E5D9733D48) (Shutdown)
           CD8521B3-6648-40E8-BEAB-A32674530206 (active, disconnected)
               Watch: Apple Watch Series 6 - 40mm (F9D5AA75-ED52-4EBE-A7CB-7A26B71BE474) (Shutdown)
               Phone: iPhone 13 Pro (A756A1D9-5185-4B4A-931F-320297AF98D4) (Shutdown)
           3E86ED9C-AD0B-48BD-BD95-24959FF0C07F (active, disconnected)
               Watch: Apple Watch Series 6 - 44mm (E23ACCF7-89F7-4FD3-A3D6-4675B4CB91DC) (Shutdown)
               Phone: iPhone 13 Pro Max (EA393477-70A5-4AFB-AEFF-C2A9777FAE95) (Shutdown)
           6B36F467-F783-4206-999C-505992EA6A90 (active, disconnected)
               Watch: Apple Watch Series 7 - 41mm (08136502-6FEF-4544-9210-35EDBFF15D4B) (Shutdown)
               Phone: iPhone 13 mini (8B8F0A4E-7A69-443C-83FD-83789FE11C04) (Shutdown)
           B0C37BE3-B20C-4C1E-BEF1-02F894110BA1 (active, disconnected)
               Watch: Apple Watch Series 7 - 45mm (14BA7B08-FEF1-4DB8-95A5-F7CC5600E578) (Shutdown)
               Phone: iPhone 13 (54C038FD-6835-499C-ADF9-ABD1D556ED4D) (Shutdown)
[  +72 ms] List of devices attached
[  +46 ms] {
             "devices" : {
               "com.apple.CoreSimulator.SimRuntime.tvOS-15-0" : [
                 {
                   "dataPath" : "\/Users\/seb\/Library\/Developer\/CoreSimulator\/Devices\/1CC7A93F-BE14-4E68-82CD-855AA400BE98\/data",
                   "logPath" : "\/Users\/seb\/Library\/Logs\/CoreSimulator\/1CC7A93F-BE14-4E68-82CD-855AA400BE98",
                   "udid" : "1CC7A93F-BE14-4E68-82CD-855AA400BE98",
                   "isAvailable" : true,
                   "deviceTypeIdentifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-TV-1080p",
                   "state" : "Shutdown",
                   "name" : "Apple TV"
                 },
                 {
                   "dataPath" : "\/Users\/seb\/Library\/Developer\/CoreSimulator\/Devices\/FE1DE336-96AA-4BB8-B945-A6A1F86C0345\/data",
                   "logPath" : "\/Users\/seb\/Library\/Logs\/CoreSimulator\/FE1DE336-96AA-4BB8-B945-A6A1F86C0345",
                   "udid" : "FE1DE336-96AA-4BB8-B945-A6A1F86C0345",
                   "isAvailable" : true,
                   "deviceTypeIdentifier" : "com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-2nd-generation-4K",
                   "state" : "Shutdown",
                   "name" : "Apple TV 4K (2nd generation)"
                 },
                 {
                   "dataPath" : "\/Users\/seb\/Library\/Developer\/CoreSimulator\/Devices\/ACB2C531-7FBE-4584-90A7-9EB83A08F5E5\/data",
                   "logPath" : "\/Users\/seb\/Library\/Logs\/CoreSimulator\/ACB2C531-7FBE-4584-90A7-9EB83A08F5E5",
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               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone14,5",
               "identifier" : "54C038FD-6835-499C-ADF9-ABD1D556ED4D",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-13-1",
               "modelName" : "iPhone 13",
               "name" : "iPhone 13"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19J344)",
               "available" : true,
               "platform" : "com.apple.platform.appletvsimulator",
               "modelCode" : "AppleTV11,1",
               "identifier" : "ACB2C531-7FBE-4584-90A7-9EB83A08F5E5",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.apple-tv-4k-2nd",
               "modelName" : "Apple TV 4K (at 1080p) (2nd generation)",
               "name" : "Apple TV 4K (at 1080p) (2nd generation)"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone12,1",
               "identifier" : "0051E7DC-DA8A-423B-8699-2027EA5335E1",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-11-1",
               "modelName" : "iPhone 11",
               "name" : "iPhone 11"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone14,2",
               "identifier" : "A756A1D9-5185-4B4A-931F-320297AF98D4",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-13-pro-1",
               "modelName" : "iPhone 13 Pro",
               "name" : "iPhone 13 Pro"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone13,2",
               "identifier" : "2765DB87-86B8-4F5C-82EB-2EE8BA42E7DD",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-12-1",
               "modelName" : "iPhone 12",
               "name" : "iPhone 12"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPad6,4",
               "identifier" : "829D7FF6-29DD-4FB8-BA92-73118831442E",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.ipad-pro-9point7-a1674-b9b7ba",
               "modelName" : "iPad Pro (9.7-inch)",
               "name" : "iPad Pro (9.7-inch)"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPad13,10",
               "identifier" : "45092A4F-4A17-4B6A-B642-8B670CC74813",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.ipad-pro-12point9-5th-1",
               "modelName" : "iPad Pro (12.9-inch) (5th generation)",
               "name" : "iPad Pro (12.9-inch) (5th generation)"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone12,5",
               "identifier" : "93549FF1-AFA4-45B1-9C2E-87C083F85113",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-11-pro-max-1",
               "modelName" : "iPhone 11 Pro Max",
               "name" : "iPhone 11 Pro Max"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPad14,1",
               "identifier" : "AD1D8563-5030-458B-A26D-6D5821D2BDE4",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.ipad-mini6-1",
               "modelName" : "iPad mini (6th generation)",
               "name" : "iPad mini (6th generation)"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPad12,2",
               "identifier" : "82C3B149-CBC0-4B58-9E1C-7D5451512169",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.ipad-9-wwan-1",
               "modelName" : "iPad (9th generation)",
               "name" : "iPad (9th generation)"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "8.0 (19R345)",
               "available" : true,
               "platform" : "com.apple.platform.watchsimulator",
               "modelCode" : "Watch6,6",
               "identifier" : "08136502-6FEF-4544-9210-35EDBFF15D4B",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.watch-series7-1",
               "modelName" : "Apple Watch Series 7 - 41mm",
               "name" : "Apple Watch Series 7 - 41mm"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPad13,5",
               "identifier" : "8A58216B-8A9C-4EA2-AB98-FEA5B55D3AA6",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.ipad-pro-11-3rd-1",
               "modelName" : "iPad Pro (11-inch) (3rd generation)",
               "name" : "iPad Pro (11-inch) (3rd generation)"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "8.0 (19R345)",
               "available" : true,
               "platform" : "com.apple.platform.watchsimulator",
               "modelCode" : "Watch5,4",
               "identifier" : "56BA1687-AC01-4457-A61B-A3EDFCAE6177",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.watch-series5-1",
               "modelName" : "Apple Watch Series 5 - 44mm",
               "name" : "Apple Watch Series 5 - 44mm"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19J344)",
               "available" : true,
               "platform" : "com.apple.platform.appletvsimulator",
               "modelCode" : "AppleTV5,3",
               "identifier" : "1CC7A93F-BE14-4E68-82CD-855AA400BE98",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.apple-tv-4",
               "modelName" : "Apple TV",
               "name" : "Apple TV"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone14,4",
               "identifier" : "8B8F0A4E-7A69-443C-83FD-83789FE11C04",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-13-mini-1",
               "modelName" : "iPhone 13 mini",
               "name" : "iPhone 13 mini"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone12,8",
               "identifier" : "5CF89046-1ED0-4933-9DB0-E610AD72D4E9",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-se-1",
               "modelName" : "iPhone SE (2nd generation)",
               "name" : "iPhone SE (2nd generation)"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone13,4",
               "identifier" : "9B3751B0-D834-42BE-A6A3-13E5D9733D48",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-12-pro-max-1",
               "modelName" : "iPhone 12 Pro Max",
               "name" : "iPhone 12 Pro Max"
             },
             {
               "simulator" : true,
               "operatingSystemVersion" : "15.0 (19A339)",
               "available" : true,
               "platform" : "com.apple.platform.iphonesimulator",
               "modelCode" : "iPhone13,1",
               "identifier" : "7223C257-6282-4AD7-97F5-0BA17BE4C0D7",
               "architecture" : "arm64",
               "modelUTI" : "com.apple.iphone-12-mini-1",
               "modelName" : "iPhone 12 mini",
               "name" : "iPhone 12 mini"
             }
           ]
           objc[50822]: Class AMSupportURLConnectionDelegate is implemented in both /usr/lib/libamsupport.dylib (0x1ebcd3130) and /Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x105b682c8). One of the two will be used. Which one is undefined.
           objc[50822]: Class AMSupportURLSession is implemented in both /usr/lib/libamsupport.dylib (0x1ebcd3180) and /Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x105b68318). One of the two will be used. Which one is undefined.
[  +30 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[   +2 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'WindowsUwpEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +103 ms] Skipping pub get: version match.
[ +129 ms] Generating /Users/seb/dev/git/mobiquite/test28/android/app/src/main/java/io/flutter/plugins/GeneratedPluginRegistrant.java
[ +191 ms] Launching lib/main.dart on Chrome in debug mode...
[ +164 ms] Updating assets
[  +71 ms] Waiting for connection from debug service on Chrome...
[  +67 ms] <- reset
[   +7 ms] /Users/seb/dev/sdk/flutter/bin/cache/dart-sdk/bin/dart --disable-dart-dev /Users/seb/dev/sdk/flutter/bin/cache/artifacts/engine/darwin-x64/frontend_server.dart.snapshot --sdk-root /Users/seb/dev/sdk/flutter/bin/cache/flutter_web_sdk/ --incremental --target=dartdevc --debugger-module-names --experimental-emit-debug-metadata -DFLUTTER_WEB_AUTO_DETECT=true --output-dill /var/folders/5d/w8_lchx95zv51vmj40cwqp_40000gn/T/flutter_tools.lf0qOL/flutter_tool.fv6xY8/app.dill --libraries-spec file:///Users/seb/dev/sdk/flutter/bin/cache/flutter_web_sdk/libraries.json --packages /Users/seb/dev/git/mobiquite/test28/.dart_tool/package_config.json -Ddart.vm.profile=false -Ddart.vm.product=false --enable-asserts --track-widget-creation --filesystem-root /var/folders/5d/w8_lchx95zv51vmj40cwqp_40000gn/T/flutter_tools.lf0qOL/flutter_tools.N9LJQd --filesystem-scheme org-dartlang-app --initialize-from-dill build/b1b715402d823b7fd5c2b68d2edcb2ce.cache.dill.track.dill --platform file:///Users/seb/dev/sdk/flutter/bin/cache/flutter_web_sdk/kernel/flutter_ddc_sdk_sound.dill --sound-null-safety
[  +18 ms] <- compile org-dartlang-app:/web_entrypoint.dart
[+12527 ms] Waiting for connection from debug service on Chrome... (completed in 12,6s)
[   +5 ms] Synced 28.4MB.
[   +1 ms] <- accept
[        ] Caching compiled dill
[  +69 ms] Using Google Chrome 96.0.4664.93 
[  +64 ms] executing: sysctl hw.optional.arm64
[  +17 ms] Exit code 0 from: sysctl hw.optional.arm64
[        ] hw.optional.arm64: 1
[  +18 ms] Found ARM Chrome installation at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome, forcing native launch.
[ +243 ms] [CHROME]:
[   +1 ms] [CHROME]:DevTools listening on ws://127.0.0.1:60537/devtools/browser/ffab8e6c-6e43-468d-b010-192777b8d426
[ +546 ms] DwdsInjector: Received request for entrypoint at http://localhost:60463/main_module.bootstrap.js
[   +8 ms] MetadataProvider: Loading debug metadata...
[  +14 ms] MetadataProvider: Loaded debug metadata (sound null safety)
[   +7 ms] DwdsInjector: Injected debugging metadata for entrypoint at http://localhost:60463/main_module.bootstrap.js
[+1409 ms] ChromeProxyService: Initializing expression compiler for main_module.bootstrap.js with sound null safety: true
[ +107 ms] DevHandler: Debug service listening on ws://127.0.0.1:60567/HtWeZS1jCtc=/ws
[  +27 ms] This app is linked to the debug service: ws://127.0.0.1:60567/HtWeZS1jCtc=/ws
[  +12 ms] Debug service listening on ws://127.0.0.1:60567/HtWeZS1jCtc=/ws
[        ] 💪 Running with sound null safety 💪
[   +4 ms] 🔥  To hot restart changes while running, press "r" or "R".
[        ] For a more detailed help message, press "h". To quit, press "q".
[        ] An Observatory debugger and profiler on Chrome is available at: http://127.0.0.1:60567/HtWeZS1jCtc=
[ +856 ms] The Flutter DevTools debugger and profiler on Chrome is available at: http://127.0.0.1:9100?uri=http://127.0.0.1:60567/HtWeZS1jCtc=
[+3170 ms] ══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
[   +3 ms] The following TypeErrorImpl was thrown during a scheduler callback:
[        ] Unexpected null value.
[        ] When the exception was thrown, this was the stack:
[        ] dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 251:49      throw_
[        ] dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 528:63  nullCheck
[        ] lib/_engine/engine/canvaskit/embedded_views.dart 479:74                           submitFrame
[        ] lib/_engine/engine/canvaskit/rasterizer.dart 36:33                                draw
[        ] lib/_engine/engine/platform_dispatcher.dart 579:7                                 render
[        ] lib/ui/src/ui/window.dart 93:50                                                   render
[        ] packages/flutter/src/rendering/view.dart 229:15                                   compositeFrame
[        ] packages/flutter/src/rendering/binding.dart 501:18                                drawFrame
[        ] packages/flutter/src/widgets/binding.dart 883:13                                  drawFrame
[        ] packages/flutter/src/rendering/binding.dart 363:5                                 [_handlePersistentFrameCallback]
[        ] packages/flutter/src/scheduler/binding.dart 1145:15                               [_invokeFrameCallback]
[        ] packages/flutter/src/scheduler/binding.dart 1082:9                                handleDrawFrame
[        ] packages/flutter/src/scheduler/binding.dart 996:5                                 [_handleDrawFrame]
[        ] lib/_engine/engine/platform_dispatcher.dart 1005:13                               invoke
[        ] lib/_engine/engine/platform_dispatcher.dart 159:5                                 invokeOnDrawFrame
[        ] lib/_engine/engine.dart 455:45                                                    <fn>
[        ] ════════════════════════════════════════════════════════════════════════════════════════════════════
[+5439 ms] DevHandler: Stopped debug service on ws://127.0.0.1:44456
[ +325 ms] Application finished.
[  +10 ms] "flutter run" took 28 394ms.
[ +115 ms] ensureAnalyticsSent: 103ms
[   +1 ms] Running shutdown hooks
[        ] Shutdown hooks complete
[        ] exiting with code 0

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    P1High-priority issues at the top of the work listc: crashStack traces logged to the consolec: regressionIt was better in the past than it is nowe: web_canvaskitCanvasKit (a.k.a. Skia-on-WebGL) rendering backend for Webengineflutter/engine related. See also e: labels.found in release: 2.6Found to occur in 2.6found in release: 2.8Found to occur in 2.8has reproducible stepsThe issue has been confirmed reproducible and is ready to work onplatform-webWeb applications specificallyr: fixedIssue is closed as already fixed in a newer version

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