Solvedflutterfire [firebase_messaging] version 6.0.7 brokes builds

My project cannot be built or runned anymore since I updated to firebase_messaging: 6.0.7.
Error log:

flutter run --verbose
error: cannot access FirebaseMessagingService
[        ]         FlutterFirebaseMessagingService.setPluginRegistrant(this);
[        ]                                        ^
[        ]   class file for not found
[        ] 1 error
[        ] FAILURE: Build failed with an exception.
[        ] * What went wrong:
[        ] Execution failed for task ':app:compileDebugJavaWithJavac'.
[        ] > Compilation failed; see the compiler error output for details.
[        ] * Try:
[        ] Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
[        ] * Get more help at
[        ] BUILD FAILED in 10s
[ +369 ms] Running Gradle task 'assembleDebug'... (completed in 11,5s)
[   +5 ms] "flutter run" took 13.543ms.
Gradle task assembleDebug failed with exit code 1

#0      throwToolExit (package:flutter_tools/src/base/common.dart:28:3)
#1      buildGradleApp (package:flutter_tools/src/android/gradle.dart:387:7)
#2      _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:73:64)
#3      _rootRunUnary (dart:async/zone.dart:1134:38)
#4      _CustomZone.runUnary (dart:async/zone.dart:1031:19)
#5      _FutureListener.handleValue (dart:async/future_impl.dart:139:18)
#6      Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)
#7      Future._propagateToListeners (dart:async/future_impl.dart:709:32)
#8      Future._completeWithValue (dart:async/future_impl.dart:524:5)
#9      _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:32:15)
#10     _completeOnAsyncReturn (dart:async-patch/async_patch.dart:290:13)
#11 (package:flutter_tools/src/base/process.dart)
#12     _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:73:64)
#13     _rootRunUnary (dart:async/zone.dart:1134:38)
#14     _CustomZone.runUnary (dart:async/zone.dart:1031:19)
#15     _FutureListener.handleValue (dart:async/future_impl.dart:139:18)
#16     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)
#17     Future._propagateToListeners (dart:async/future_impl.dart:709:32)
#18     Future._completeWithValue (dart:async/future_impl.dart:524:5)
#19     Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:554:7)
#20     _rootRun (dart:async/zone.dart:1126:13)
#21 (dart:async/zone.dart:1023:19)
#22     _CustomZone.runGuarded (dart:async/zone.dart:925:7)
#23     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:965:23)
#24     _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#25     _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
#26     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#27     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:175:5)

Additional context
Version 6.0.3 works fine

 flutter doctor --verbose
[] Flutter (Channel beta, v1.12.13+hotfix.5, on Mac OS X 10.15.1 19B88, locale it-IT)
     Flutter version 1.12.13+hotfix.5 at /Users/federico/flutter
     Framework revision 27321ebbad (14 hours ago), 2019-12-10 18:15:01 -0800
     Engine revision 2994f7e1e6
     Dart version 2.7.0

[] Android toolchain - develop for Android devices (Android SDK version 29.0.0)
     Android SDK at /Users/federico/Library/Android/sdk
     Android NDK location not configured (optional; useful for native profiling support)
     Platform android-29, build-tools 29.0.0
     Java binary at: /Applications/Android
     Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)
     All Android licenses accepted.

[] Xcode - develop for iOS and macOS (Xcode 11.2.1)
     Xcode at /Applications/
     Xcode 11.2.1, Build version 11B500
     CocoaPods version 1.8.3

[] Android Studio (version 3.5)
     Android Studio at /Applications/Android
     Flutter plugin version 41.1.2
     Dart plugin version 191.8593
     Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)

[] VS Code (version 1.40.2)
     VS Code at /Applications/Visual Studio
     Flutter extension version 3.6.0

[] Connected device (1 available)
     Nexus 6  ZX1G425QJK  android-arm  Android 7.1.1 (API 25)

 No issues found!
18 Answers

✔️Accepted Answer

I solved it.. Adding the plugin dependencies in app/build.gradle

implementation ''
implementation 'androidx.annotation:annotation:1.1.0'
implementation 'androidx.localbroadcastmanager:localbroadcastmanager:1.0.0'

Other Answers:

I don't think you need all of them but you can just add
implementation '' as it's also used in firebase_messaging itself.
this may help to understand ''

I believe there will be a fix from the team soon but a temporary fix could be as described.

Same problem.
@kroikie Please advise:
When looking at the documentation and comparing it with the code in the example project - they are NOT the same.
Is the documentation describing the old way while the example (and plugin code) is using the new v2 embedding?
Problem: documentation out of sync?

Same issue. Still broken with latest flutter on master channel and 6.0.9 firebase_messaging

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