See this thread: Plex freezing a transcode no matter the client stating out of space
Your logs are filled with the same error message.
Try rolling back to 1.29.2.
From Plex Media Server.log (the message repeats 41393 times):
Nov 21, 2022 22:23:59.532 [0x7f8f3f887b38] ERROR - [Req#74561/Transcode/4v3lqr9jr14lwr4z1ibemqe7/8442e89b-d2dc-4f85-ab77-490490eab22f] Error while decoding stream #0:1: No space left on device
