Does your Plex server have an active Nvidia GPU?
Based on your logs the server is trying to use that GPU and fails to do so. It’s not using the iGPU of your Celeron.
As a consequence there’s e.g. messages like this:
Sep 14, 2021 19:37:38.393 [2868] DEBUG - [Transcode] TPU: hardware transcoding: enabled, but no hardware decode accelerator found
PS: you seriously need to rethink your file naming…
TV Shows
Marvel's Spider-Man
Marvel's Spider-Man Specials
Marvel's Spider-Man - 0x01 & 0x02 & 0x03 & 0x04 & 0x05 & 0x06 - Origin Shorts Introduction! & Origin Shorts Observation! & Origin Shorts Hypothesis! & Origin Shorts Prediction! & Origin Shorts Experimentation! & Origin Shorts Conclusion!.mkv
should be
TV Shows
Marvel's Spider-Man
Specials
Marvel's Spider-Man - s00e01-e06.mkv
-- OR --
Marvel's Spider-Man - s00e01-e06 - Origin Shorts Introduction! & Origin Shorts Observation! & Origin Shorts Hypothesis! & Origin Shorts Prediction! & Origin Shorts Experimentation! & Origin Shorts Conclusion!.mkv
