1、休学逻辑调整;

2、作业布置提示;
3、服务指标逻辑调整；

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

@@ -73,7 +73,8 @@ public class StudentServeServiceImpl implements StudentServeService {
         }
         for (Integer beServeStudentId : beServeStudentIds) {
             List<StudentServeCourseDto> studentServeCourseDtos = studentTimesMap.get(beServeStudentId);
-            if(CollectionUtils.isEmpty(studentServeCourseDtos)){
+            if(CollectionUtils.isEmpty(studentServeCourseDtos)
+                    ||Objects.isNull(studentServeCourseDtos.get(0).getServiceTagUpdateTime())){
                 serveStudentIds.add(beServeStudentId);
                 continue;
             }