Attempt to invoke virtual method 'java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String)' on a null object reference

[eostonystark]

Flutter crash report; please file at https://github.com/flutter/flutter/issues.

command

flutter run

exception

ProcessException: ProcessException: Process "/private/var/root/Library/Android/sdk/platform-tools/adb" exited abnormally:
Starting: Intent { act=android.intent.action.RUN flg=0x20000000 cmp=one.tokendex.app/.MainActivity (has extras) }

Exception occurred while executing:
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String)' on a null object reference
at android.app.LoadedApk.createAppFactory(LoadedApk.java:224)
at android.app.LoadedApk.(LoadedApk.java:152)
at android.app.ActivityThread.getPackageInfo(ActivityThread.java:2043)
at android.app.ActivityThread.getPackageInfo(ActivityThread.java:1998)
at android.app.ActivityThread.getPackageInfo(ActivityThread.java:1970)
at android.app.ContextImpl.createPackageContextAsUser(ContextImpl.java:2054)
at com.android.server.AttributeCache.get(AttributeCache.java:135)
at com.android.server.am.ActivityRecord.(ActivityRecord.java:903)
at com.android.server.am.ActivityStarter.startActivity(ActivityStarter.java:804)
at com.android.server.am.ActivityStarter.startActivity(ActivityStarter.java:528)
at com.android.server.am.ActivityStarter.startActivityMayWait(ActivityStarter.java:1057)
at com.android.server.am.ActivityStarter.execute(ActivityStarter.java:473)
at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:4841)
at com.android.server.am.ActivityManagerShellCommand.runStartActivity(ActivityManagerShellCommand.java:458)
at com.android.server.am.ActivityManagerShellCommand.onCommand(ActivityManagerShellCommand.java:139)
at android.os.ShellCommand.exec(ShellCommand.java:103)
at com.android.server.am.ActivityManagerService.onShellCommand(ActivityManagerService.java:15478)
at android.os.Binder.shellCommand(Binder.java:631)
at android.os.Binder.onTransact(Binder.java:529)
at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:4397)
at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3114)
at android.os.Binder.execTransact(Binder.java:726)
Command: /private/var/root/Library/Android/sdk/platform-tools/adb -s emulator-5554 shell am start -a android.intent.action.RUN -f 0x20000000 --ez enable-background-compilation true --ez enable-dart-profiling true --ez enable-checked-mode true --ez verify-entry-points true one.tokendex.app/one.tokendex.app.MainActivity

#0      runCheckedAsync (package:flutter_tools/src/base/process.dart:255:5)
<asynchronous suspension>
#1      AndroidDevice.startApp (package:flutter_tools/src/android/android_device.dart:450:34)
<asynchronous suspension>
#2      FlutterDevice.runHot (package:flutter_tools/src/resident_runner.dart:364:54)
<asynchronous suspension>
#3      HotRunner.run (package:flutter_tools/src/run_hot.dart:253:39)
<asynchronous suspension>
#4      RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:428:37)
<asynchronous suspension>
#5      FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:559:18)
#6      _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:77:64)
#7      _rootRunUnary (dart:async/zone.dart:1132:38)
#8      _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#9      _FutureListener.handleValue (dart:async/future_impl.dart:126:18)
#10     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:639:45)
#11     Future._propagateToListeners (dart:async/future_impl.dart:668:32)
#12     Future._complete (dart:async/future_impl.dart:473:7)
#13     _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
#14     _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:28:18)
#15     _completeOnAsyncReturn (dart:async-patch/async_patch.dart:294:13)
#16     RunCommand.usageValues (package:flutter_tools/src/commands/run.dart)
#17     _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:77:64)
#18     _rootRunUnary (dart:async/zone.dart:1132:38)
#19     _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#20     _FutureListener.handleValue (dart:async/future_impl.dart:126:18)
#21     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:639:45)
#22     Future._propagateToListeners (dart:async/future_impl.dart:668:32)
#23     Future._complete (dart:async/future_impl.dart:473:7)
#24     _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
#25     _AsyncAwaitCompleter.complete.<anonymous closure> (dart:async-patch/async_patch.dart:33:20)
#26     _rootRun (dart:async/zone.dart:1124:13)
#27     _CustomZone.run (dart:async/zone.dart:1021:19)
#28     _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart:947:23)
#29     _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
#30     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
#31     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:115:13)
#32     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:5)

[pichillilorenzo]

I don't see any of my classes in the error log! I think you need to file this issue to the official Flutter repository (https://github.com/flutter/flutter/issues) and not here.

[eostonystark]

just only add it to pubspec.yaml and get,
restart app, notice as follows
Oops; flutter has exited unexpectedly.
Sending crash report to Google.

[pichillilorenzo]

did you try the new version 1.2.0?

[github-actions]

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