Plex Media Server libraries suddenly missing on QNAP TS-451

Plex Media Server
1

Server Version#:1.25.6
Player Version#:Web

Never seen this before - today suddenly I see no libraries in Plex. The browser/phone app logs me in just fine but I don’t see my server or libraries - only the standard Plex “Web Picks” etc.

How do I troubleshoot/restore this?

2

Never mind. Restarting Plex Media Server didn’t fix it, but restarting the QNAP did. Strange.