flutter_01.log

Flutter crash report.
Please report a bug at https://github.com/flutter/flutter/issues.

## command

flutter --no-color run --machine --track-widget-creation --device-id=06bb3998a299573d7d4ee6dd5a98341880d125fb --start-paused --dart-define=flutter.inspector.structuredErrors=true lib/main.dart

## exception

SentinelException: [Sentinel kind: Collected, valueAsString: <collected>] from getIsolate()

```
```

## flutter doctor

```
[✓] Flutter (Channel beta, 2.2.0-10.1.pre, on Mac OS X 10.15.7 19H524 darwin-x64, locale en-EG)
    • Flutter version 2.2.0-10.1.pre at /Users/omar/Documents/Projects/flutter
    • Framework revision 0941968447 (7 days ago), 2021-04-15 12:01:02 -0700
    • Engine revision d2a2e93510
    • Dart version 2.13.0 (build 2.13.0-211.6.beta)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.1)
    • Android SDK at /Users/omar/Library/Android/sdk
    • Platform android-29, build-tools 29.0.1
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.4, Build version 12D4e
    • CocoaPods version 1.10.1

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

[✓] Android Studio (version 4.1)
    • 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 1.8.0_242-release-1644-b3-6915495)

[✓] IntelliJ IDEA Community Edition (version 2019.3.4)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 45.1.2
    • Dart plugin version 193.6911.31

[✓] VS Code (version 1.55.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.21.0

[✓] Connected device (3 available)
    • Omar’s iPhone (mobile) • 06bb3998a299573d7d4ee6dd5a98341880d125fb • ios            • iOS 13.3
    • iPhone 12 Pro (mobile) • CA12E058-9004-43BC-87E9-EAB0CDA419B2     • ios            • com.apple.CoreSimulator.SimRuntime.iOS-14-4 (simulator)
    • Chrome (web)           • chrome                                   • web-javascript • Google Chrome 90.0.4430.85

• No issues found!
```