Can't Open Plex Media Server

Are your server logs showing what’s causing this? You should be able to access those logs manually from ~/Library/Logs/Plex Media Server/ (-> Plex Media Server.log)

Sorry for the slow reply. Just looked in the logs folder - there is no Plex Media Server folder or Plex Media Server.log.

That’s certainly a weird one… usually Plex at least gets to tell why it gets stuck/kicked.
You could try having a look at your system logs using the Console app. Keep in mind… this will show all system level events, so it’s getting a lot of information.

  1. Open the Console system app
  2. Clear the logs once ready
  3. Launch PMS and wait for it to disappear
  4. In Console, CMD-A , CMD-C to copy all the logs
  5. Paste them into a new text document to attach to the forum topic (or DM)

The faster you get to #5, the less clutter / non-Plex messages will be in the log.
If we’re lucky, there’s some useful hints on why Plex isn’t even starting up.

Here’s what seems relevant on my logs (PMS doesn’t start up, Mac Mojave. Worked for years, just stopped):

Nov 24, 2021 20:10:19.063 [0x700005ae3000] ERROR - SQLITE3:(nil), 11, database corruption at line 68176 of [1b256d97b5]

Nov 24, 2021 20:10:19.063 [0x700005ae3000] ERROR - SQLITE3:(nil), 11, database disk image is malformed in “PRAGMA cache_size=2000”
Nov 24, 2021 20:10:19.063 [0x700005ae3000] ERROR - Database corruption: sqlite3_statement_backend::prepare: database disk image is malformed for SQL: PRAGMA cache_size=2000

@Redux See the link above Repair a Corrupted Database | Plex Support