No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp( )

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======== Exception caught by widgets library ======================================================= The following FirebaseException was thrown building Builder: [core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()

The relevant error-causing widget was: MaterialApp file:///E:/Programs/flutterLearning/flash-chat-flutter/lib/main.dart:16:12 When the exception was thrown, this was the stack: #0 MethodChannelFirebase.app (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:118:5) #1 Firebase.app (package:firebase_core/src/firebase.dart:53:41) #2 FirebaseAuth.instance (package:firebase_auth/src/firebase_auth.dart:37:47) #3 new _RegistrationScreenState (package:flash_chat/screens/registration_screen.dart:15:30) #4 RegistrationScreen.createState (package:flash_chat/screens/registration_screen.dart:11:45) ...

https://stackoverflow.com/questions/66937824/no-firebase-app-default-has-been-created-call-firebase-initializeapp April 04, 2021 at 11:37AM