what version of plex server do you have and on what device windows, linux, nas.
The same happened to me .
I have downloaded the plexmediaserver_1.19.1.2645-ccb6eb67e_amd64.deb
then downgrade.
everything fine without problems it worked fine but for security I uploaded the version
and then upgrade to Versión 1.19.1.2701
it seems that now it works it takes an hour without error
