Flutter Google Sign In Issue (PlatformException(sign_in_failed, e5.b: 10:, null, null)

This is the error message that i am getting, whenever i try to use google sign in (This issue doesn’t happen in debug, release and profile versions of the app. It only happens at the version (aab) that i upload to the google playstore):

PlatformException(sign_in_failed, e5.b: 10:, null, null)

Here is everything google related in my pubspec.yaml file:

 google_mobile_ads: ^3.0.0
 google_sign_in: ^6.1.1
 google_sign_in_dartio: ^0.2.2+1
 googleapis: ^10.1.0
 firebase_core: ^2.13.0
 firebase_messaging: ^14.6.5

These are the codes that i use to implement google sign in to my app:

API CALL:

class ThirdPartyService extends AppService {
  static ThirdPartyService get instance => ThirdPartyService();

  ThirdPartyService() : super(path: '');

  static final googleSignInInstance = GoogleSignIn(
    serverClientId:
        'MY_CLIENT_ID',
  );

  Future signInWithGoogle() async {
    final gUser = googleSignInInstance.currentUser ?? await googleSignInInstance.signIn();
    if (gUser != null) {
      final gAuthEmail = gUser.email;
      final token = (await gUser.authentication).accessToken;
      var response = await post('/OAUTH/GOOGLE', {
        "EMAIL_ADDRESS": gAuthEmail,
        "TOKEN": token,
      });
      if (!response.success) throw response.message;
      return AppData.userDetail.value = {...response.data};
    }
    throw 'GoogleSignInFailed';
  }
}

------------------

GOOGLE SIGN IN FUNCTION:

void loginWithGoogle() async {
    try {
      await ThirdPartyService.instance.signInWithGoogle();
      Get.offAll(
        () => RateAppInitWidget(
          builder: (rateMyApp) => BottomNavBar(rateMyApp: rateMyApp),
        ),
      );
    } catch (e) {
      Get.snackbar(
        'Warning',
        'Google Sign in failed. Try again later.',
        colorText: AppColors.black,
        backgroundColor: AppColors.white,
        duration: const Duration(seconds: 5),
      );
    }
  }

How can i fix this issue? Please help 😓

P.S: My app is approved and verified by google and i’ve tried many solutions related to SHA1 keys.

Hello, I’ve followed every step of implementing google sign in to my app (firebase steps, google consoles, in app configurations etc etc). Even though the google sign in is working correctly in debug, release and profile versions. It doesn’t work when i upload the aab to the google playstore. I’ve searched through many solutions and literally tried most if not every fix that i could find but the issue persists.