Merge branch 'saas_hgw_2022_6_6' into master_saas

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

@@ -329,6 +329,9 @@ public class ImLiveBroadcastRoomServiceImpl extends ServiceImpl<ImLiveBroadcastR
             if (ImLiveBroadcastRoom.STUDENT.equals(dto.getPopularizeType())) {
                 bizIdList = WrapperUtil.toList(dto.getPopularizeStudentIds());
             }
+            if (CollectionUtils.isEmpty(bizIdList)) {
+                return;
+            }
             List<ImLiveRoomPurview> collect = bizIdList.stream().map((id) -> {
                 ImLiveRoomPurview imLiveRoomPurview = new ImLiveRoomPurview();
                 imLiveRoomPurview.setRoomUid(roomUid);