问QAVEndpoint requsetViewList 返回结果失败？

OnEndpointsUpdateInfo 中打印出处出来的用户/align2016/03/18 165444.071 | E | Thread:26775 | Client | av_room_multi_impl.cpp1228ToIdentifierSuccess | OnRoomUserJoin identifier = d71152c8-24db-4981-83a4-1222a0b496cc, tiny id = 144115198358741771, cFlag = 0x2, hasCameraVideo = 0, hasScreenVideo = 0.**2016/03/18 165444.071 | E | Thread:26775 | Client | av_room_multi_impl.cpp1228ToIdentifierSuccess | OnRoomUserJoin identifier = 7da7904f-11a3-43b1-9da4-22ee25522571, tiny id = 144115198365977323, cFlag = 0x1, hasCameraVideo = 1, hasScreenVideo = 0.**我请求的时候 【QAVEndpoint requsetViewList】的参数(lldb) po identiferList<NSArrayI 0x13f535370>(7da7904f-11a3-43b1-9da4-22ee25522571)(lldb) po srcTypeArray<NSArrayI 0x1415e8e70>(1)align=left但是返回的结果就是QAV_ERR_SERVER_ENDPOINT_NOT_EXIST