W/ClipData(28270): Failure opening stream
W/ClipData(28270): java.lang.SecurityException: Permission Denial: opening provider org.chromium.chrome.browser.util.ChromeFileProvider from ProcessRecord{a34436c 28270:com.enhancme/u0a425} (pid=28270, uid=10425) that is not exported from UID 10219
W/ClipData(28270): 	at android.os.Parcel.createException(Parcel.java:2088)
W/ClipData(28270): 	at android.os.Parcel.readException(Parcel.java:2056)
W/ClipData(28270): 	at android.os.Parcel.readException(Parcel.java:2004)
W/ClipData(28270): 	at android.app.IActivityManager$Stub$Proxy.getContentProvider(IActivityManager.java:5866)
W/ClipData(28270): 	at android.app.ActivityThread.acquireProvider(ActivityThread.java:7191)
W/ClipData(28270): 	at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2895)
W/ClipData(28270): 	at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:2124)
W/ClipData(28270): 	at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1678)
W/ClipData(28270): 	at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1632)
W/ClipData(28270): 	at android.content.ClipData$Item.coerceToText(ClipData.java:367)
W/ClipData(28270): 	at io.flutter.plugin.platform.PlatformPlugin.getClipboardData(PlatformPlugin.java:278)
W/ClipData(28270): 	at io.flutter.plugin.platform.PlatformPlugin.access$700(PlatformPlugin.java:24)
W/ClipData(28270): 	at io.flutter.plugin.platform.PlatformPlugin$1.getClipboardData(PlatformPlugin.java:81)
W/ClipData(28270): 	at io.flutter.embedding.engine.systemchannels.PlatformChannel$1.onMethodCall(PlatformChannel.java:141)
W/ClipData(28270): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:230)
W/ClipData(28270): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
W/ClipData(28270): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:692)
W/ClipData(28270): 	at android.os.MessageQueue.nativePollOnce(Native Method)
W/ClipData(28270): 	at android.os.MessageQueue.next(MessageQueue.java:336)
W/ClipData(28270): 	at android.os.Looper.loop(Looper.java:197)
W/ClipData(28270): 	at android.app.ActivityThread.main(ActivityThread.java:8016)
W/ClipData(28270): 	at java.lang.reflect.Method.invoke(Native Method)
W/ClipData(28270): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
W/ClipData(28270): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1076)
W/ClipData(28270): Caused by: android.os.RemoteException: Remote stack trace:
W/ClipData(28270): 	at com.android.server.am.ActivityManagerService.getContentProviderImpl(ActivityManagerService.java:8367)
W/ClipData(28270): 	at com.android.server.am.ActivityManagerService.getContentProviderImpl(ActivityManagerService.java:8213)
W/ClipData(28270): 	at com.android.server.am.ActivityManagerService.getContentProvider(ActivityManagerService.java:8854)
W/ClipData(28270): 	at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:2461)
W/ClipData(28270): 	at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3356)
W/ClipData(28270):

await showGeneralDialog(
      context: context,
      barrierDismissible: true,
      barrierLabel: MaterialLocalizations.of(context).modalBarrierDismissLabel,
      barrierColor: Colors.black45,
      transitionDuration: const Duration(milliseconds: 200),
      pageBuilder: (BuildContext buildContext, Animation animation,
          Animation secondaryAnimation) {
        return AlertDialog(
            contentPadding: EdgeInsets.all(0),
            content:Container(height: 200,width: 200,color: randomColor(),)
             
            );
      });

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 1.20.3, on Mac OS X 10.15.6 19G2021, locale en-GB)
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 11.7)
[✓] Android Studio (version 3.6)
[✓] VS Code (version 1.48.2)
[✓] Connected device (1 available)

• No issues found!


[✓] Flutter (Channel stable, 1.20.3, on Mac OS X 10.15.6 19G2021, locale en-GB)
    • Flutter version 1.20.3 at /Software/SDK/Flutter-SDK/flutter
    • Framework revision 216dee60c0 (7 days ago), 2020-09-01 12:24:47 -0700
    • Engine revision d1bc06f032
    • Dart version 2.9.2

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    • Android SDK at /Software/SDK/Android/SDK
    • Platform android-29, build-tools 29.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.7)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.7, Build version 11E801a
    • CocoaPods version 1.8.4

[✓] Android Studio (version 3.6)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 44.0.2
    • Dart plugin version 192.7761
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)

[✓] VS Code (version 1.48.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.13.2

 
[✓] Connected device (1 available)