My setup is a Cisco business 250 switch and a Cisco 240AC wireless access point. The MacBooks on the network are getting periodically disconnected, though they reconnect without any action from the user. It's enough, however, to interrupt streaming, zoom, etc. I was able to capture the error for one of the sessions:
*spamApTask0: Jun 09 15:15:20.926: %APF-4-MOBILESTATION_NOT_FOUND: apf_api.c:57510 Could not find the mobile xx:xx:xx:xx:xx:xx in internal database
*apfReceiveTask: Jun 09 15:15:20.826: %APF-5-CLIENT_DEAUTHENTICATE: apf_80211.c:4056 Client Deauthenticated: Client MAC: xx:xx:xx:xx:xx:xx, Ip Address: (192.168.99.10), AP Name: wirelessAP, Radio: 5 GHz , WLAN Id: 2, Reason: 1.
*apfReceiveTask: Jun 09 15:15:20.825: %APF-5-CLIENT_DISASSOCIATE: apf_80211.c:4325 Client Disassociated: Client MAC: xx:xx:xx:xx:xx:xx, Ip Address: (192.168.99.10), AP Name: wirelessAP, Radio: 5 GHz , WLAN Id: 2, Reason: 1.
*apfReceiveTask: Jun 09 15:15:20.723: %APF-5-CLIENT_RUN_STATE: apf_foreignap.c:2245 Client Associated: Assigning Ip Address: (192.168.99.14) to Client MAC: 38:f9:d3:72:37:24.
*apfReceiveTask: Jun 09 15:15:20.630: %OSAPI-6-MUTEX_UNLOCK_FAILED: osapi_sem.c:1253 Failed to release a mutual exclusion object. mutex unlock failed, not owned by the calling thread. errcode = Operation not permitted
*apfReceiveTask: Jun 09 15:15:20.630: %OSAPI-6-MUTEX_LOCK_FAILED: osapi_sem.c:1362 Failed to acquire a mutual exclusion object. waitforever: mutex lock operation failed. errcode = Resource deadlock avoided