authorizeAndExchangeCode not working as expected

Hello, Greetings. Thanks for the awesome library.

I built the example project with your given credential. It was working nicely.

But when I'm using my own credential, authorizeAndExchangeCode is not working as expected. Consider the following scenario

Dummy project home page
Click on Sign in with auto code exchange
Authentication page is loading
Authentication is done using valid user name & password
Return back to application
Exception is happening in try-catch block. The error message is type '() => void' is not a subtype of type '(Object) => dynamic'

Future<void> _signInWithAutoCodeExchange(
      {bool preferEphemeralSession = false}) async {
    try {
      _setBusyState();

      // show that we can also explicitly specify the endpoints rather than getting from the details from the discovery document
      debugPrint('_signInWithAutoCodeExchange >> before');
      final AuthorizationTokenResponse? result =
          await _appAuth.authorizeAndExchangeCode(
        AuthorizationTokenRequest(
          _clientId,
          _redirectUrl,
          // serviceConfiguration: _serviceConfiguration,
          discoveryUrl: _discoveryUrl,
          // issuer: _issuer,
          scopes: _scopes,
          preferEphemeralSession: preferEphemeralSession,
        ),
      ).catchError(() => print('error > not able to be reached'));
      debugPrint('_signInWithAutoCodeExchange >> result >> ${result == null}');

      if (result != null) {
        debugPrint('main >> pdl >> access_token >> ${result.accessToken} '
            '\n\n id_token >> ${result.idToken} '
            '\n\n refresh_token >> ${result.refreshToken} '
            '\n\n expire_date_time >> ${result.accessTokenExpirationDateTime!.toIso8601String()}');
        _processAuthTokenResponse(result);
        await _testApi(result);
      }
    } catch (_) {
      print(_); // prints >>> type '() => void' is not a subtype of type '(Object) => dynamic'
      debugPrint('_signInWithAutoCodeExchange >> catch >> $_'); // _signInWithAutoCodeExchange >> catch >> type '() => void' is not a subtype of type '(Object) => dynamic'
      _clearBusyState();
    }
  }

  void _processAuthTokenResponse(AuthorizationTokenResponse response) {
    setState(() {
      _accessToken = _accessTokenTextController.text = response.accessToken!;
      _idToken = _idTokenTextController.text = response.idToken!;
      _refreshToken = _refreshTokenTextController.text = response.refreshToken!;
      _accessTokenExpirationTextController.text =
          response.accessTokenExpirationDateTime!.toIso8601String();
    });
  }

Any help will be appreciated. Thank you.

MaikuB / flutter_appauth

authorizeAndExchangeCode not working as expected #423