confirm_user_screen.dart

Future<void> _confirmUser() async {
  try {
    // (1) 
    final result = await Amplify.Auth.confirmSignUp(
      username: widget.username!,
      confirmationCode: _confirmationCodeController.text,
    );
    // (2)
    setState(() {
      _isLoading = false;
    });
    // (3)
    if (result.isSignUpComplete && mounted) {
      context.go('/sign-in');
    }
    // (4)
  } on CodeMismatchException {
    setState(() {
      _isLoading = false;
      _errorMessage = 'The confirmation code is wrong. Please enter it again.';
    });
  } on Exception catch(error) {
    setState(() {
      _isLoading = false;
       _errorMessage = 'An unexpected error has happened. Check the logs for detail';
    });
    logger.error(error.toString());
   }
}