With Nextcloud update: "Not properly set up to resolve “/ocm-provider/” and “/ocs-provider/” on NGINX server

There is much chit-chat about this stuff in various nextcloud github issues related to upgrading to the latest 27.1.2 version. There seems to be a problem.

I’m running an apache server with nextcloud in a sub-directory. The fix in this comment solved the problem for me:

TL;DR - in the .htacces file found in your nextcloud root, drop the front slash of the index.php part of this line:

RewriteRule ^ocm-provider/?$ index.php [QSA,L]

I suspect you could also ignore the warning and it will be fixed in the next release of nextcloud.