I am really grateful for your response. I have thoroughly checked all the containers. I have stopped all the container only keep one container running collabora/code:6.4.8.4 .even though i am still getting the same error
ibreoffice-app | frk-00054-00054 2021-10-15 07:06:30.031044 [ forkit ] ERR Failed to unmount [/opt/lool/child-roots/NWWLVSjULglPzWBi].| common/JailUtil.cpp:68
^[[3;5~libreoffice-app | wsd-00007-00058 2021-10-15 07:28:08.549667 [ websrv_poll ] WRN client - server version mismatch, disabling browser cache. Expected: 6a844e4| wsd/FileServer.cpp:285
libreoffice-app | wsd-00007-00076 2021-10-15 07:28:08.678520 [ docbroker_003 ] ERR Cannot get file info from WOPI storage uri [https://localhost:5001/api/wopi/files/ahmed?reuse_cookies=ALFRESCO_REMEMBER_ME%3D1%3A_gcl_au%3D1.1.908821500.1633419112%3Autm_source%3Dalfresco%3Autm_medium%3Ddirect%3A_ga%3DGA1.1.586843340.1633419113%3Agtm_referralHostname%3Dlocalhost]. Error: Connection refused| wsd/Storage.cpp:647
libreoffice-app | wsd-00007-00076 2021-10-15 07:28:08.678652 [ docbroker_003 ] ERR loading document exception: Connection refused| wsd/DocumentBroker.cpp:1445
libreoffice-app | wsd-00007-00076 2021-10-15 07:28:08.678724 [ docbroker_003 ] ERR Failed to add session to [/api/wopi/files/ahmed] with URI [https://localhost:5001/api/wopi/files/ahmed?reuse_cookies=ALFRESCO_REMEMBER_ME%3D1%3A_gcl_au%3D1.1.908821500.1633419112%3Autm_source%3Dalfresco%3Autm_medium%3Ddirect%3A_ga%3DGA1.1.586843340.1633419113%3Agtm_referralHostname%3Dlocalhost]: Connection refused| wsd/DocumentBroker.cpp:1407
libreoffice-app | wsd-00007-00076 2021-10-15 07:28:08.678788 [ docbroker_003 ] ERR Error while loading : Connection refused| wsd/LOOLWSD.cpp:3465
libreoffice-app | wsd-00007-00076 2021-10-15 07:28:08.920355 [ docbroker_003 ] ERR No DocBroker found, or DocBroker marked to be destroyed. Terminating session ToClient-034| wsd/ClientSession.cpp:332
libreoffice-app | wsd-00007-00076 2021-10-15 07:28:08.921461 [ docbroker_003 ] ERR No DocBroker found, or DocBroker marked to be destroyed. Terminating session ToClient-034| wsd/ClientSession.cpp:332
libreoffice-app | wsd-00007-00076 2021-10-15 07:28:09.479141 [ docbroker_003 ] ERR Invalid or unknown session [034] to remove.| wsd/DocumentBroker.cpp:1484