Primary Script unknown .. /cloud/ocm-provider/index.php

I am getting the error below in nginx/error.log since I upgraded to v72 today:

Apologies, this ocm-provider error shows in nginx/errorlog in my v71 mailinabox NextCloud as well

sent in stderr: “Primary script unknown” while reading response header from upstream, client: 192.168.5.178, server: box.gamix.co.nz, request: “GET /cloud/ocm-provider/index.php HTTP/2.0”, upstream: “fastcgi://unix:/var/run/php/php8.0-fpm.sock:”, host: “box.gamix.co.nz”

This also shows in NextCloud Security & Settings (NextCloud obviously unlocked):
Your web server is not properly set up to resolve “/cloud/ocm-provider/”. This is most likely related to a web server configuration that was not updated to deliver this folder directly…

Found references to this error but they all relate to newer versions, where ocm-provider has been retired?
Everything seems to be working OK though.

Thanks
Geoffrey