Exemple does not work anymore, no conversations list are displayed and logs FireBase Errors

first button "start client" seems to work the error apear in log

E/flutter (15563): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: [core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp() E/flutter (15563): #0 MethodChannelFirebase.app (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:193:5) E/flutter (15563): #1 Firebase.app (package:firebase_core/src/firebase.dart:56:41) E/flutter (15563): #2 FirebaseMessaging.instance (package:firebase_messaging/src/messaging.dart:32:47) E/flutter (15563): #3 ConversationsNotifier.registerForNotification (package:vyv_flutter/chat/conversations_notifier.dart:149:39)

and when trying to ShutDownclient : SDK checkDisposed | Attempt to use disposed object in Channel#getSynchronizationStatus fills the console in and a loop, need to kill the app to stop it.

Any maintenance or update sheduled ?