feat:vip课课程数量限制排除乐理课

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

@@ -259,7 +259,7 @@ public class VipGroupServiceImpl extends BaseServiceImpl<Long, VipGroup> impleme
 			}
 		}
 
-		if(Objects.nonNull(vipGroupActivity.getAttribute3())&&StringUtils.isNotBlank(vipGroupActivity.getAttribute3())){
+		if(Objects.nonNull(vipGroupActivity)&&Objects.nonNull(vipGroupActivity.getAttribute3())&&StringUtils.isNotBlank(vipGroupActivity.getAttribute3())){
 			Integer maxCourseNum = Integer.parseInt(vipGroupActivity.getAttribute3());
 			Integer requestCourseNum = vipGroupApplyBaseInfoDto.getOnlineClassesNum() + vipGroupApplyBaseInfoDto.getOfflineClassesNum();
 			if(requestCourseNum.compareTo(maxCourseNum)!=0){