update

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

@@ -2416,7 +2416,7 @@ public class MusicGroupServiceImpl extends BaseServiceImpl<String, MusicGroup> i
                 }
             }
             if(queryInfo.getMusicGroupIds() == null || queryInfo.getMusicGroupIds().size() == 0){
-                return null;
+                return new PageInfo<MusicGroup>();
             }
         }
         musicGroupPageInfo = queryPage(queryInfo);