There appears to be a bug with nchan as seen in this link: It would seem to me that this is related to the issues I am having. This is the second or third time this has happened to me. Out of nowhere, with no apparent, obvious trigger, my syslog gets filled with hundreds of messages like this one: root@unraid:~# tail /var/log/syslog Mar 15 00:45:47 unraid nginx: 2021/03/15 00:45:47 [alert] 3161#3161: worker process 4945 exited on signal 6 Mar 1