I've read several reports of this problem but I do not seem to be able to resolve it. The instructions I see are:
Hmm... that sure sounds like GMS, as GMS listens on port 8191 for
connections from the POA.

At any rate, log into the HTTP interface of the POA, go to
Configuration, Event Notification List, click on each user where it's
listing on port 8191, then check Delete Event Configuration
and click submit.

When I go to my POA, http://ip_address:7181 I get the page, go to Configuration, but I do not see any reference to Event Notification List

Any help would be appreciated. Thanks.