我将我的项目从 Flutter 更新到 Flutter 2.0 null-safety。我解决了依赖项之间的所有问题，但是当我运行应用程序控制台时会显示此错误。 我发现很多类似的问题，但他们的答案在我的项目中不起作用。
我尝试使用 flutter clean，
flutter pub get,
删除缓存，
从设备上卸载应用程序，
添加这个
WidgetsFlutterBinding.ensureInitialized(); await Firebase.initializeApp();
在主要但实际上任何工作。有人有其他建议吗？或者其他可以尝试的事情？
E/flutter (11903): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: MissingPluginException(No implementation found for method Firebase#initializeCore on channel plugins.flutter.io/firebase_core)
E/flutter (11903): #0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:7)
E/flutter (11903): <asynchronous suspension>
E/flutter (11903): #1 MethodChannel.invokeListMethod (package:flutter/src/services/platform_channel.dart:344:35)
E/flutter (11903): <asynchronous suspension>
E/flutter (11903): #2 MethodChannelFirebase._initializeCore (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:30:23)
E/flutter (11903): <asynchronous suspension>
E/flutter (11903): #3 MethodChannelFirebase.initializeApp (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:77:7)
E/flutter (11903): <asynchronous suspension>
E/flutter (11903): #4 Firebase.initializeApp (package:firebase_core/src/firebase.dart:41:31)
E/flutter (11903): <asynchronous suspension>
E/flutter (11903): #5 mainCommon (package:tauatu/tauatu.dart:35:3)
E/flutter (11903): <asynchronous suspension>
E/flutter (11903): ```