I am using Bloc pattern and I am getting successful response/data when printed but when I am setting the response on the Text widget its giving me error.

Below is my code

 if (state is RegistrationFailureState) {
                final String message = state.errorMessage;
                print('MESSAGE >>>>>> $message');
                showDialog(
                    context: context,
                    builder: (context) {
                      return const AlertDialog(
                        content: Text(
                          'Error: $message',
                          style: TextStyle(
                            fontSize: 24,
                            fontWeight: FontWeight.bold,
                          ),
                        ),
                      );
                    });
              }

Below is the error I am getting on the Text widget

Thanks in advance.