Unable to initialize FirebaseApp - Flutter-CodePudding

My project suddenly stopped running properly - it is unable to initialize FirebaseApp.

I've been using an old-fashioned Firebase configuration - Google-Services files directly from Firebase console. I switched to the command flutterfire configure but the error isn't gone. I also tried to delete whole ios directory and try to run flutterfire configure again, but still no results.

Error:

[VERBOSE-2:dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(channel-error, Unable to establish connection on channel., null, null)
#0      FirebaseCoreHostApi.initializeCore (package:firebase_core_platform_interface/src/pigeon/messages.pigeon.dart:205:7)
<asynchronous suspension>
#1      MethodChannelFirebase._initializeCore (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:29:44)
<asynchronous suspension>
#2      MethodChannelFirebase.initializeApp (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:73:7)
<asynchronous suspension>
#3      Firebase.initializeApp (package:firebase_core/src/firebase.dart:40:31)
<asynchronous suspension>
#4      main (package:traveler/main.dart:12:3)
<asynchronous suspension>

Line causing the issue:

  // Placed after WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

flutter doctor -v:

[✓] Flutter (Channel master, 3.1.0-0.0.pre.1310, on macOS 12.4 21F79 darwin-arm, locale en-PL)
    • Flutter version 3.1.0-0.0.pre.1310 at /Users/wiktor/development/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 91603595d1 (13 days ago), 2022-06-18 19:14:07 -0400
    • Engine revision 3ac96a1f40
    • Dart version 2.18.0 (build 2.18.0-190.0.dev)
    • DevTools version 2.14.0

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/wiktor/Library/Android/sdk
    • Platform android-31, build-tools 31.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.8 10-b944.6916264)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.4)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 13F17a
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from: