@@ -634,6 +634,9 @@ public class ClassGroupServiceImpl extends BaseServiceImpl<Integer, ClassGroup>
musicGroup.setSettlementType(type);
musicGroupDao.update(musicGroup);
}
+ if(classGroupAndTeachers == null || classGroupAndTeachers.size()==0){
+ return null;
+ }
List<Integer> classGroupIds = classGroupAndTeachers.stream().map(ClassGroupTeachersDto::getId).collect(Collectors.toList());