Make sure you register your app with Firebase
Follow this guide to register your app with Firebase if you haven’t already.
Android
- Enable the Google People API.
- Filled out all required fields in the console for OAuth consent screen
- Update client ID
Open file flutter_store_manager/android/app/google-services.json
Copy client ID like the screenshot below
![](https://appcheap.io/wp-content/uploads/2022/05/image-15-1024x786.png)
Then update to file flutter_store_manager/lib/constants/credentials.dart
![](https://appcheap.io/wp-content/uploads/2022/05/image-16-1024x180.png)
iOS
Open file flutter_store_manager/ios/GoogleService-Info.plist
copy REVERSED_CLIENT_ID
![](https://appcheap.io/wp-content/uploads/2022/05/image-17-1024x345.png)
Then update to file flutter_store_manager/ios/Runner/Info.plist
![](https://appcheap.io/wp-content/uploads/2022/05/image-18-1024x654.png)