我正在为我的 Flutter 项目设置 Firebase。当我使用signInAnonymously()方法时，它会引发此错误：
I/BiChannelGoogleApi( 9532): [FirebaseAuth: ] getGoogleApiForMethod()
returned Gms: com.google.firebase.auth.api.internal.zzaq@41ffdb0
I/flutter ( 9532): PlatformException(FirebaseException, An internal
error has occurred. [ API key not valid. Please pass a valid API key.
], null) I/flutter ( 9532): error sign in