Server Version#: 1.24.1.4931-1a38e63c6
Player Version#: N/A
The web interface says: Update available for Plex Media Server
You are currently running version 1.24.1.4931 on the server “Plex-LT”. Version 1.24.5.5173 is now available. This update will need to be installed manually after download.
Would you please go look at /etc/apt/sources.list.d/plexmediaserver.list
You should find
chuck@papyplex:/etc/apt/sources.list.d$ cat plexmediaserver.list
# When enabling this repo please remember to add the PlexPublic.Key into the apt setup.
# wget -q https://downloads.plex.tv/plex-keys/PlexSign.key -O - | sudo apt-key add -
#deb https://downloads.plex.tv/repo/deb/ public main
chuck@papyplex:/etc/apt/sources.list.d$
Have you uncommented the line: deb https://downloads.plex.tv/repo/deb/ public main