When I add ios Client Id android gives this error, signin on ios works.

AUTH_ERROR(realm::app::ServiceError:47): invalid id token: 'aud' must be a string containing the client_id
2023-01-25 03:06:22.969 21705-21705 System.err              com.friends.pets W  	at io.realm.internal.network.NetworkRequest.onError(NetworkRequest.java:68)
2023-01-25 03:06:22.969 21705-21705 System.err              com.friends.pets W  	at io.realm.internal.objectstore.OsJavaNetworkTransport.nativeHandleResponse(Native Method)
2023-01-25 03:06:22.969 21705-21705 System.err              com.friends.pets W  	at io.realm.internal.objectstore.OsJavaNetworkTransport.handleResponse(OsJavaNetworkTransport.java:98)
2023-01-25 03:06:22.969 21705-21705 System.err              com.friends.pets                W  	at io.realm.internal.network.OkHttpNetworkTransport$1.run(OkHttpNetworkTransport.java:102)
2023-01-25 03:06:22.970 21705-21705 System.err              com.sciforearth.pets                W  	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
2023-01-25 03:06:22.970 21705-21705 System.err              com.friends.pets                W  	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
2023-01-25 03:06:22.970 21705-21705 System.err              com.friends.pets                W  	at java.lang.Thread.run(Thread.java:1012)


and when I replace it with webClient Id signin on android works and gives this error on iOS:

Error Domain=io.realm.app Code=24 "invalid id token: 'aud' must be a string containing the client_id" UserInfo={Server Log URL=https://realm.mongodb.com/groups/63b6d0cee8d6c1420b7fbed7/apps/63b6d39ea9e76e8f428c7f93/logs?co_id=63d050da927603235424f1f9, NSLocalizedDescription=invalid id token: 'aud' must be a string containing the client_id, HTTP Status Code=401}

    GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(getString(R.string.default_web_client_id))
            .requestEmail()
            .build();
    gsc = GoogleSignIn.getClient(this, gso);

    oneTapClient = Identity.getSignInClient(this);
    signInRequest = BeginSignInRequest.builder()
            .setGoogleIdTokenRequestOptions(BeginSignInRequest.GoogleIdTokenRequestOptions.builder()
                    .setSupported(true)
                    // Your server's client ID, not your Android client ID.
                    .setServerClientId(getString(R.string.default_web_client_id))
                    // Only show accounts previously used to sign in.
                    .setFilterByAuthorizedAccounts(true)
                    .build())
            .build();

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if(requestCode == GOOGLE_REQUEST_Code){
        Task<GoogleSignInAccount> acc = GoogleSignIn.getSignedInAccountFromIntent(data);
        if(acc.isSuccessful()) {
            HandleSignInTask(acc);
        }

    }

}

public void HandleSignInTask(Task<GoogleSignInAccount> task){

    String token = task.getResult().getIdToken();
    if(token != null){
        Credentials cred = Credentials.google(token, GoogleAuthType.ID_TOKEN);
        
            App app =((Initialize)getApplication()).app;
            app.loginAsync(cred, result -> {
                if(result.isSuccess()) {
                    Log.i("TAG", "onResult: -->" );
                    startActivity(new Intent(Login.this, MainActivity.class));
                    finish();
                }
                else {
                    result.getError().printStackTrace();
                    Log.i("TAG", "googleAuthErrorMongo:--> "+ result.getError().toString());
                }
    

        }).addOnFailureListener(e -> Log.i(TAG, "onFailure: " + e.getLocalizedMessage()));
    }
    else{
        binding.progressBar4.setVisibility(View.GONE);
        Snackbar.make(binding.getRoot(),"Something went wrong",Snackbar.LENGTH_SHORT).show();
    }
}

        let credential = GoogleAuthProvider.credential(withIDToken: (signInResult?.user.idToken?.tokenString)!,
                                                       accessToken: (signInResult?.user.accessToken.tokenString)!)

        Auth.auth().signIn(with: credential) { result, error in

            guard error == nil else{

                    do {
                        try  print("ios google auth successfull userId.. \(result.get().id)")
                        
                        DispatchQueue.main.async {
                            
                            let sb = UIStoryboard(name: "Main", bundle: nil)
                            let nextViewController = sb.instantiateViewController(withIdentifier: "MainViewController") as! ViewController
                            self.dismiss(animated: false)
                            self.present(nextViewController, animated: true)
                        }
                        
                    } catch let error {print("error while signin in to realm--> \(error)")}

                }
                }
        }

    }
    
}