解决学生管理信息修改保存报错

src/main/java/com/xjrsoft/module/student/service/impl/BaseStudentSchoolRollServiceImpl.java

@@ -40,6 +40,7 @@ public class BaseStudentSchoolRollServiceImpl extends MPJBaseServiceImpl<BaseStu
         List<BaseClass> classList = baseClassMapper.selectList(
             new QueryWrapper<BaseClass>().lambda().eq(BaseClass::getTeacherId, teacherId)
         );
+
         if(classList != null && !classList.isEmpty()){
             dto.setTeacherId(teacherId);
         }