Undraid 6.9.2
I had this start being an issue for me too, and I'd just recently switched over to using Safari on a Mac. I always keep a tab open to my Unraid machine. After I found this and the query re: Safari I switched to Brave (was just giving Safari a chance really), rebooted the server to clear the log storage and haven't seen the message or an increase in logs (still on 1%) in the last ~6d.