Flutter Google Sign-in, stuck after selecting account - firebase

Question

I am running into issue trying to signin to Firebase with Google Sign-in in my Flutter app.
I've seen two other posts about this, but no answers that resolve it for myself. I am using Google Sign-in provider in flutter, google_sign_in: ^5.1.0, Flutter ver 2.2.1
I have followed the instructions on generating/adding the Sha-1, Sha-256 keys to my firebase project. Prior to that , I was getting an API exception. I added the keys, downloaded the latest google-json file to my android folder and got beyond that error. Now, when I click to Sign-in, I get the account selection screen.
I select my account, and then I hit a white page with endless spinner.
Here is the login code I'm running.
GoogleSignIn _googleSignIn = GoogleSignIn(
scopes: <String>[
'email',
'https://www.googleapis.com/auth/contacts.readonly',
],
);
Future<void> _handleGoogleSignIn() async {
try {
GoogleSignInAccount? googleSignInAccount =
await _googleSignIn.signIn();
GoogleSignInAuthentication? googleSignInAuthentication =
await googleSignInAccount?.authentication;
final AuthCredential credential = GoogleAuthProvider.credential(
accessToken: googleSignInAuthentication?.accessToken,
idToken: googleSignInAuthentication?.idToken,
);
final UserCredential user = await _auth.signInWithCredential(credential);
} catch (error) {
print('in error block');
print(error);
}
}
In doing some debug, it doesn't seem to get beyond the initial line:
GoogleSignInAccount? googleSignInAccount =
await _googleSignIn.signIn();
But I don't get any error, any warning, nothing...just a spinner that sits indefintely.
Any ideas on how to solve this, or at minimum , debug this without getting an error?
Thx

Answer 1

After digging further, I found he answer on the same bug reported on the Flutter github account.
https://github.com/flutter/flutter/issues/89169
The solution:
In the following code snippet (which is defined as default setup)
GoogleSignIn _googleSignIn = GoogleSignIn(
scopes: [
'email',
'https://www.googleapis.com/auth/contacts.readonly',
],
);
Change https://www.googleapis.com/auth/contacts.readonly (restricted scope) to https://www.googleapis.com/auth/userinfo.profile (non-restricted scope).
After that, OAuth screen will proceed with sign in.