Error in logs I can't google away.

[tekgeek]

[Error]
opnsense

/xmlrpc.php: Unable to retrieve authenticator for ec+/VzE7xRr3xhGzFyZJk0n1PgAg+ZriD2Ty3SFq/4PtAhLpdOj0RZxeDorEKMKE2l47/1L4OAKZy+Po

I cant find this key aynwhere. Its not related to any VPN, the self-signed https cert, my lets-encrypt https cert. I don't have "High Availability" so CARP (where google pointed me) shouldn't be running. The error repeats about every 80 seconds.

[cookiemonster]

Could you have some integration or script trying to log in/authenticate unsuccessfully ?
https://github.com/opnsense/core/blob/6f87280cd406693579004717e71ec480759cd538/src/www/xmlrpc.php#L71