From chapter 2, I build and run the app to get the error, and the app froze on the launch screen.
I had run sh propagate-config- files.sh
in Chapter 1. The final project was like that too.
Launching lib/main.dart on iPhone 14 in debug mode... Running Xcode build... Xcode build done. 12.3s Debug service listening on ws://127.0.0.1:58102/y8Cd0V4E5QI=/ws Syncing files to device iPhone 14... [VERBOSE-2:dart_vm_initializer.cc(41)] Unhandled Exception: [core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp() #0 MethodChannelFirebase.app (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:193:5) #1 Firebase.app (package:firebase_core/src/firebase.dart:53:41) #2 FirebaseCrashlytics.instance (package:firebase_crashlytics/src/firebase_crashlytics.dart:33:55) #3 new ErrorReportingService (package:monitoring/src/error_reporting_service.dart:10:58) #4 main.#errorReportingService#initializer (package:wonder_words/main.dart:27:38) #5 main.<anonymous closure> (package:wonder_words/main.dart) #6 _RootZone.runBinary (dart:async/zone.dart:1665:54) #7 runZonedGuarded.<anonymous closure> (dart:async/zone.dart:1775:18) #8 _Zone._processUncaughtError (dart:async/zone.dart:1080:14) #9 _CustomZone.handleUncaughtError (dart:async/zone.dart:1284:5) #10 Future._propagateToListeners (dart<…>