Backup Location for Arch Install

Hi, as per earlier post I had an issue with Plex Media Server not upgrading to the latest version.
After removing and installing again I manage to get things up and running and maintainable.

I went to the Backing Up Plex Media Server page.
However the location stated there for Linux was installed on my system but no data present.

After digging around I did find the actual folder under /var/lib/plex
Not sure if it is Arch Linux specific, but might be a good idea to update the page?