Took a look and this is what I am seeing.
Jan 18 20:44:07 :343005: <INFO> |mdns| mdns_generate_refresh_query_packet 2580 record expiry: send refresh query for server mac: 00:26:73:04:31:cd
Jan 18 20:44:07 :343005: <INFO> |mdns| ag_mdns_get_unique_token_list 621 Insert:Returning list of 4 tokens
Jan 18 20:44:08 :304057: <INFO> |stm| tunnel_timeout: Tunnel <IP of AP> 18:64:72:c5:04:3a last_hbt_seq_num_rcvd 120
Jan 18 20:44:08 :305003: <INFO> |stm| AP <AP Name> is down
this repeats for other APs that are impacted. Odd part is it only seems to be a handful of AP-115s. I even took a new AP-115 out of the box let it update and same results. Then took an older AP-105 that had been good as well that need to be updated it completed and ran without issue. All of the APs leverage the same AP Group.