flutterfire No app has been configured yet. Error retrieving thread information: (ipc/send) invalid destination port

I made a new app and did the steps in Decs but when I run the app, it is run correctly but still has errors on the console.

This error 6.26.0 - [Firebase/Core][I-COR000005] No app has been configured yet. show on the console just when i run the app on simulator for the first time then when i run it again it isn't shown on the console.

my console errors:

Launching lib/main.dart on iPhone 11 Pro in debug mode...
Running Xcode build...
Xcode build done.                                           21.1s
6.26.0 - [Firebase/Core][I-COR000005] No app has been configured yet.
Waiting for iPhone 11 Pro to report its views...
Debug service listening on ws://127.0.0.1:57659/LoVj1aW15Pg=/ws
Syncing files to device iPhone 11 Pro...

I put FirebaseSDKVersion on my podfile like this

# Uncomment this line to define a global platform for your project
platform :ios, '9.0'

# Override Firebase SDK Version
FirebaseSDKVersion = '21.1.0'

my pub file

version: 1.0.0+1

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.3
  firebase_core: ^0.5.0
  firebase_auth: "^0.18.0+1"

I used the same StatefulWidget examples of Docs in my testing code ...

import 'package:flutter/material.dart';

// Import the firebase_core plugin
import 'package:firebase_core/firebase_core.dart';

void main() {
  runApp(App());
}

class App extends StatefulWidget {
  _AppState createState() => _AppState();
}

class _AppState extends State<App> {
  // Set default `_initialized` and `_error` state to false
  bool _initialized = false;
  bool _error = false;

  // Define an async function to initialize FlutterFire
  void initializeFlutterFire() async {
    try {
      // Wait for Firebase to initialize and set `_initialized` state to true
      await Firebase.initializeApp();
      setState(() {
        _initialized = true;
      });
    } catch (e) {
      // Set `_error` state to true if Firebase initialization fails
      setState(() {
        _error = true;
      });
    }
  }

  @override
  void initState() {
    initializeFlutterFire();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    // Show error message if initialization failed
    if (_error) {
      return MaterialApp(
        home: Scaffold(
          body: Center(
            child: Text('Error 1'),
          ),
        ),
      );
    }

    // Show a loader until FlutterFire is initialized
    if (!_initialized) {
      return MaterialApp(
        home: Scaffold(
          body: Center(
            child: Text('loading'),
          ),
        ),
      );
    }

    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Text(' my awesome app'),
        ),
      ),
    );
  }
}