Request processing failed

💎 Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: 갑자기 프로젝트를 진행하던 도중 ↑ 같은 오류 메세지가 뜨면서 실행되지 않았다 .. @Repository public class AdministratorDAO { @Autowired private SqlSessionTemplate sqlSession; public int getListCount() { return sqlSession.selectOne("AdministratorMapper.getListCount"); }..