1、添加教务老师字段

2、布置作业

mec-biz/src/main/java/com/ym/mec/biz/service/impl/VipGroupServiceImpl.java

@@ -1076,7 +1076,9 @@ public class VipGroupServiceImpl extends BaseServiceImpl<Long, VipGroup> impleme
 		List<ClassGroupStudentMapper> classGroupStudents = classGroupStudentMapperDao.findByClassGroup(classGroup.getId());
 
 		List<ImGroupMember> imGroupMemberList = new ArrayList<>();
-		imGroupMemberList.add(new ImGroupMember(vipGroupApplyBaseInfoDto.getEducationalTeacherId().toString()));
+		if(Objects.nonNull(vipGroupApplyBaseInfoDto.getEducationalTeacherId())){
+            imGroupMemberList.add(new ImGroupMember(vipGroupApplyBaseInfoDto.getEducationalTeacherId().toString()));
+        }
 		imGroupMemberList.add(new ImGroupMember(vipGroupApplyBaseInfoDto.getUserId().toString()));
 		//生成学生单课缴费信息
 		for (ClassGroupStudentMapper classGroupStudent : classGroupStudents) {