Missing parameters for match request - metadata fails to update

Server Version#: 1.42.2.10156
Plex Media Server Logs_2025-09-24_17-44-09.zip (7.1 MB)

Player Version#: 4.147.1

Seeing a lot of this when trying to get metadata for The Great British Bake Off (and I’m sure others). This isn’t every show though, just some.

[Req#426] Matching 'Episode 4' (ID 72687) with agent tv.plex.agents.series
[Req#426/MetadataAgent/tv.plex.metadata.agents] Missing parameters for match request.
[Req#426] Refreshing metadata for '' (agent: tv.plex.agents.series)

This happens specifically with The Great British Bake-Off. Interestingly, when I set the agent to TVDB, updated the metadata, then switched back it was fine for a bit. Then Plex decided to wipe the metadata for this show:

There was a change for metadata item 72637 (The Great British Bake Off), saving.
Doing expensive tags write for 'The Great British Bake Off' because something changed.

Except it’s writing all these log lines for things that absolutely have not changed in weeks, and as far as I can tell all that’s happening is it’s then wiping the metadata because of whatever missing parameters.

Expected behaviour:
Metadata correctly fetched using Plex’s agent and not overwritten with blanks.

I just want to get into Bread Week guys!