嗨，当我尝试使用JPA预定义和自定义方法方法查询检索实体数据时，得到此错误：
：未经授权的错误：org.postgresql.util.PSQLException:查询未返回任何结果。
例如，如果我从dao类调用这个getUserMailtyByUserEmailId（）方法，它会给出No results were returned by the query in logs，for findAll（）方法也会给出相同的结果。
但是我可以通过使用保存（）方法来保存数据。
这里是刀类

@Component
public class UserDaoImpl implements UserDao {
    @Autowired
    private UserRepository userRepository;
    @Autowired
    private ModelMapper modelMapper;
    @Override
    public UserEntity createUser(UserDto userDto) {
        UserEntity userEntity=modelMapper.map(userDto,UserEntity.class);
        userEntity.setUserRole(Set.of(UserRole.END_USER));
        userEntity.setCreatedAt(LocalDateTime.now());
        return userRepository.save(userEntity);
    }
    @Override
    public boolean isUserExistsByEmailOrMobileNumber(String userEmail, String mobileNumber) {
        return userRepository.existsByUserEmailOrUserMobileNumber(userEmail,mobileNumber);
    }
    @Override
    public Optional<UserEntity> getUserEntityByUserEmailId(String username) {
        return userRepository.findUserEntityByUserEmail(username);
    }   
}

Repository类

@Repository
public interface UserRepository extends JpaRepository<UserEntity, Long> {
    boolean existsByUserEmailOrUserMobileNumber(String userEmail, String userMobileNumber);
    Optional<UserEntity> findUserEntityByUserEmail( String userEmail);
}

实体类

@Entity(name = "user_model")
@Data
@Setter
@Getter
public class UserEntity{
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    @NotNull
    @NotEmpty
    private String firstName;
    private String lastName;
    private Gender gender;
    @NotNull
    @NotEmpty
    private String userEmail;
    @NotNull
    @NotEmpty
    private String userMobileNumber;
    @NotNull
    @NotEmpty
    private String password;
    private Date birthDate;
    @Enumerated(EnumType.STRING)
    private Set<UserRole> userRole;
    @Temporal(TemporalType.TIMESTAMP)
    private LocalDateTime createdAt;
    @Temporal(TemporalType.TIMESTAMP)
    private LocalDateTime updatedAt;
}

在控制台中，生成日志查询，这些查询按预期工作
从user_model u1_0中选择u1_0.id，u1_0.birth_date，u1_0.created_at，u1_0.first_name，u1_0.gender，u1_0.last_name，u1_0.password，u1_0.updated_at，u1_0.user_email，u1_0.user_mobile_number，u1_0.user_role，其中u1_0.user_email=？休眠：从user_model u1_0中选择u1_0.id，u1_0.birth_date，u1_0.created_at，u1_0.first_name，u1_0.gender，u1_0.last_name，u1_0.password，u1_0.updated_at，u1_0.user_email，u1_0.user_mobile_num，u1_0.user_role，其中u1_0.user_email=？