我试图在出现错误时使用如下所示的try ... catch语法在底部显示snackBar，但是由于某种原因，它没有显示出来。有人对此有解决方案吗？

Widget _confirmButton() {
    return SizedBox(
      height: 54,
      width: double.infinity,
      child: ElevatedButton(
        onPressed: () {
          try {
            _tryValidation();
            resetPassword(userEmail).then(
              (value) => Get.to(
                () => CompletePasswordReset(),
              ),
            );
          } catch (e) {
            const snackBar = SnackBar(
              content: Text('아이디 또는 비밀번호가 맞지 않습니다.'),
              backgroundColor: errorColor40,
              behavior: SnackBarBehavior.floating,
              margin: EdgeInsets.all(30),
              duration: Duration(seconds: 1),
            );
            ScaffoldMessenger.of(context).showSnackBar(snackBar);
          }
        },
        child: Text(
          '가입여부 확인',
          style: TextStyle(
            color: baseColor10,
            fontFamily: 'semi-bold',
            fontSize: titleMedium,
          ),
        ),
        style: ElevatedButton.styleFrom(
          backgroundColor: primaryColor50,
          elevation: 0,
          shadowColor: Colors.transparent,
          side: BorderSide(
            color: Colors.transparent,
          ),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(15.0),
          ),
        ),
      ),
    );
  }