feat：乐理课

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

@@ -302,6 +302,7 @@ public class VipGroupServiceImpl extends BaseServiceImpl<Long, VipGroup> impleme
 			vipGroupApplyBaseInfoDto.setStatus(VipGroupStatusEnum.APPLYING);
 		}
 		if(CollectionUtils.isEmpty(vscps)){
+			vscps = new ArrayList<>();
 			for (Integer canBuyStudentId : canBuyStudentIds) {
 				vscps.add(new VipGroupStudentCoursePrice(canBuyStudentId, vipGroupApplyBaseInfoDto.getOfflineClassesUnitPrice(), vipGroupApplyBaseInfoDto.getOfflineClassesUnitPrice(), vipGroupApplyBaseInfoDto.getTotalPrice()));
 			}