Y'all need to update the debian repository signature

Plex Media Server
1

Server Version#: 1.42.1.10060-4e8b05daf
Player Version#:
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled>

From apt update from Debian trixie/forky/sid:

Warning: https://downloads.plex.tv/repo/deb/dists/public/InRelease: Policy will reject signature within a year, see --audit for details
Audit: https://downloads.plex.tv/repo/deb/dists/public/InRelease: Sub-process /usr/bin/sqv returned an error code (1), error message is:
   Signing key on CD665CBA0E2F88B7373F7CB997203C7B3ADCA79D is not bound:
              No binding signature at time 2025-08-11T17:06:54Z
     because: Policy rejected non-revocation signature (PositiveCertification) requiring second pre-image resistance
     because: SHA1 is not considered secure since 2026-02-01T00:00:00Z
2

Yes, it is known it WILL EXPIRE 2026-02-01.

It is on Operations task list.