update

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

@@ -500,7 +500,9 @@ public class VipGroupServiceImpl extends BaseServiceImpl<Long, VipGroup> impleme
 				dataList.forEach(vipGroup -> {
 					Integer overCourses = vipGroupOverCourseMaps.get(vipGroup.getId().toString());
 					ClassGroup classGroup = vipGroupClassGroupMap.get(vipGroup.getId().toString());
-					vipGroup.setStudentNum(classGroup.getStudentNum());
+					if(Objects.nonNull(classGroup)){
+						vipGroup.setStudentNum(classGroup.getStudentNum());
+					}
 
 					Long aLong = totalClassTimeMap.get(vipGroup.getId() + "");
 					vipGroup.setTotalClassTimes(aLong==null?0:aLong.intValue());