title: Unable to initialize FirebaseApp - Flutter
body: <p>My project suddenly stopped running properly - it is unable to initialize FirebaseApp.</p>
  <p>I've been using an old-fashioned Firebase configuration - Google-Services files directly from Firebase console. I switched to the command <code>flutterfire configure</code> but the error isn't gone. I also tried to delete whole <code>ios</code> directory and try to run <code>flutterfire configure</code> again, but still no results.</p>
  <p><strong>Error:</strong></p>
  <pre><code>[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)
  &lt;asynchronous suspension&gt;
  #1      MethodChannelFirebase._initializeCore (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:29:44)
  &lt;asynchronous suspension&gt;
  #2      MethodChannelFirebase.initializeApp (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:73:7)
  &lt;asynchronous suspension&gt;
  #3      Firebase.initializeApp (package:firebase_core/src/firebase.dart:40:31)
  &lt;asynchronous suspension&gt;
  #4      main (package:traveler/main.dart:12:3)
  &lt;asynchronous suspension&gt;
  </code></pre>
  <p><strong>Line causing the issue:</strong></p>
  <pre><code>  // Placed after WidgetsFlutterBinding.ensureInitialized();
    await Firebase.initializeApp(
      options: DefaultFirebaseOptions.currentPlatform,
    );
  </code></pre>
  <p><strong>flutter doctor -v:</strong></p>
  <pre><code>[✓] 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:
         https://plugins.jetbrains.com/plugin/9212-flutter
      • Dart plugin can be installed from:
         https://plugins.jetbrains.com/plugin/6351-dart
      • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
  
  [✓] Android Studio
      • Android Studio at /Users/wiktor/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/211.7628.21.2111.7905991/Android Studio Preview.app/Contents
      • Flutter plugin can be installed from:
         https://plugins.jetbrains.com/plugin/9212-flutter
      • Dart plugin can be installed from:
         https://plugins.jetbrains.com/plugin/6351-dart
      • Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
  
  [✓] Android Studio
      • Android Studio at /Users/wiktor/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/211.7628.21.2111.7863044/Android Studio Preview.app/Contents
      • Flutter plugin can be installed from:
         https://plugins.jetbrains.com/plugin/9212-flutter
      • Dart plugin can be installed from:
         https://plugins.jetbrains.com/plugin/6351-dart
      • Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
  
  [✓] IntelliJ IDEA Ultimate Edition (version 2021.1.2)
      • IntelliJ at /Users/wiktor/Applications/JetBrains Toolbox/IntelliJ IDEA Ultimate.app
      • Flutter plugin can be installed from:
         https://plugins.jetbrains.com/plugin/9212-flutter
      • Dart plugin can be installed from:
         https://plugins.jetbrains.com/plugin/6351-dart
  
  [✓] IntelliJ IDEA Ultimate Edition (version 2021.1.2)
      • IntelliJ at /Users/wiktor/Library/Application Support/JetBrains/Toolbox/apps/IDEA-U/ch-0/211.7442.40/IntelliJ IDEA.app
      • Flutter plugin version 68.1.1
      • Dart plugin version 211.7817
  
  [✓] Connected device (3 available)
      • iPod touch (7th generation) (mobile) • BAEBD16B-8BA9-4D2F-B86D-38282E5FA060 • ios            • com.apple.CoreSimulator.SimRuntime.iOS-15-5 (simulator)
      • macOS (desktop)                      • macos                                • darwin-arm64   • macOS 12.4 21F79 darwin-arm
      • Chrome (web)                         • chrome                               • web-javascript • Google Chrome 103.0.5060.53
  
  [✓] HTTP Host Availability
      • All required HTTP hosts are available
  
  • No issues found!
  
  </code></pre>