I just finished the first video and I get an error relating to firebase

[akshaybalaji123]

@theindianappguy Launching lib\main.dart on sdk gphone x86 arm in debug mode...
Running Gradle task 'assembleDebug'...
✓ Built build\app\outputs\flutter-apk\app-debug.apk.
Installing build\app\outputs\flutter-apk\app.apk...
Waiting for sdk gphone x86 arm to report its views...
Debug service listening on ws://127.0.0.1:65280/yj6K69WaXFE=/ws
Syncing files to device sdk gphone x86 arm...

════════ Exception caught by widgets library
══╡ 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:///C:/Users/aksha/Downloads/chatapp/chat_app_tutorial/lib/main.dart:13:12

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:52:41)
#2 FirebaseAuth.instance (package:firebase_auth/src/firebase_auth.dart:37:47)
#3 new AuthMethods (package:chat_app_tutorial/services/auth.dart:6:42)
#4 new _SignupState (package:chat_app_tutorial/views/signup.dart:14:33)
#5 Signup.createState (package:chat_app_tutorial/views/signup.dart:7:33)
#6 new StatefulElement (package:flutter/src/widgets/framework.dart:4635:25)
#7 StatefulWidget.createElement (package:flutter/src/widgets/framework.dart:900:38)
... Normal element mounting (132 frames)
#139 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3490:14)
#140 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5991:32)
... Normal element mounting (258 frames)
#398 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3490:14)
#399 Element.updateChild (package:flutter/src/widgets/framework.dart:3258:18)
#400 RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:1174:16)
#401 RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:1145:5)
#402 RenderObjectToWidgetAdapter.attachToRenderTree. (package:flutter/src/widgets/binding.dart:1087:17)
#403 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2620:19)
#404 RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:1086:13)
#405 WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:927:7)
#406 WidgetsBinding.scheduleAttachRootWidget. (package:flutter/src/widgets/binding.dart:908:7)
(elided 11 frames from class _RawReceivePortImpl, class _Timer, dart:async, and dart:async-patch)

════════════════════════════════════════════════════════════════════════════════════════════════════
═══════════════════════════════════════════════════════
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:///C:/Users/aksha/Downloads/chatapp/chat_app_tutorial/lib/main.dart:13:12
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:52:41)
#2 FirebaseAuth.instance (package:firebase_auth/src/firebase_auth.dart:37:47)
#3 new AuthMethods (package:chat_app_tutorial/services/auth.dart:6:42)
#4 new _SignupState (package:chat_app_tutorial/views/signup.dart:14:33)
...

How do I fix this. It says that the error causing wdget was the MaterialApp(
) on the main.dart how do solve this? could I get help asap

[akshaybalaji123]

Yes I did but now I am having a different problem.

My app does start the connection to Firebase but each time it says connection timed out and I cannot resolve it.

[akshaybalaji123]

@theindianappguy do you use stream in this app? If we want to launch this app is there anyway to do this without stream??

[prasad7a]

Hello Akshay,
I recommend checking out this StackOverflow thread: https://stackoverflow.com/questions/63492211/no-firebase-app-default-has-been-created-call-firebase-initializeapp-in
There's more info on why this happened in the thread.
I used the fourth method because it was an easy implementation and it solved this issue instantly.

[schmelto]

The easiest way to solve this issue is to add those lines at your main.dart-file in your main-function

import 'package:flutter_chat_app/helper/authenticate.dart';
import 'package:firebase_core/firebase_core.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();
  runApp(MyApp());
}