IOS - Facebook/Firebase config error on signInWithCredential

[bertbeck]

I'm getting the following error when I try to login in to Firebase using Facebook with my app. The Facebook login looks fine, credential gets set but FirebaseAuth.instance.signInWithCredential(credential) throws an exception. As far as I can tell app id and app secret are set properly in Firebase and match the Facebook settings. What else needs to be set correctly? Google login seems to work.

Code I'm using is this:

final facebookLogin = new FacebookLogin();
final facebookLoginResult = 
     await facebookLogin.logInWithReadPermissions(['email', 'public_profile']);
...

  case FacebookLoginStatus.loggedIn:
    print("LoggedIn");
    AuthCredential credential= FacebookAuthProvider.getCredential(accessToken: facebookLoginResult.accessToken.token );
    firebaseUser = await FirebaseAuth.instance.signInWithCredential(credential);
    break;

exception is thrown on:

    firebaseUser = await FirebaseAuth.instance.signInWithCredential(credential);

error is:

   PlatformException (PlatformException(ERROR_INVALID_CREDENTIAL, Unsuccessful 
   debug_token response from Facebook: {"error":{"message":"(#100) The App_id in the 
   input_token did not match the Viewing 
   App","type":"OAuthException","code":100,"fbtrace_id":"A9EbpMwrswKpp9SB-uyoPDh"}}, 
   null))

Any suggestions?

[bertbeck]

It was a config file mis-match.