Greetings!
I had the same warning, but only after upgrading from version 27.1.0 to version 27.1.2:
Your web server is not properly set up to resolve "/ocm-provider/". This is most likely related to a web server configuration that was not updated to deliver this folder directly. Please compare your configuration against the shipped rewrite rules in ".htaccess" for Apache or the provided one in the documentation for Nginx at it's [documentation page ↗](https://docs.nextcloud.com/server/27/go.php?to=admin-nginx). On Nginx those are typically the lines starting with "location ~" that need an update.
Well, the reason is simple: Unlike in earlier versions, where all the above fixes did the trick, there is no /ocm-provider folder any more in Nextcloud 27.1.2!
I guess this error message is actually a bug, but let’s see what you think!
C.