I can connect to localhost Plex server, I can login and access the home page, settings, etc.
But when I go to add media I get this message to “Get the plex media server” which is obviously installed.
I had Plex installed about 1 year ago, it worked fine, until one moment when it didn’t.
I tried to debug, I updated everything, created a new user using the admin account, tried to use that to add media, nothing. I abandoned it thinking it was a bug.
Now, a few months later (4-5), tried again, updated everything again, some thing.
So I followed the steps in that document (closed plex, deleted the 4 entries using the terminal), started plex again, went to http://127.0.0.1:32400/web, where I saw this new entry with an exclamation.