Cant access Plex Server remotely using cloudfare tunnell

Server Version#:Version 4.160.0
Player Version#:Version 4.160.0
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled> I set up a cloudfare tunnel to my Plex server (so I don’t have to expose a port).

However, I cant access the server at all using my fqdn. All I get is the following error using a browser: