Wait a minute. These 57 lines are the complete octoprint.log?
There should be more octoprint.log s with a timestamp in the filename.
You may share the recent ones too.
Also you have to enable the serial logging:
Here are the additional logs, Since this was not printing related I had not worried about enhancedoctoprint.log.zip (1.1 MB) serial.log (4.0 KB) Serial logging.
BTW. Please turn off the DEBUG modes.
They fill the log wit unnecessary information.
DEBUG is for programmers to find bugs in their code and not helpful in this case.
if no issues with raspberry pi you could unmark :
OctoPrint Settings -> Pi Support -> Enable under voltage and overheat detection via. After unmarking the update proces should also work
But with a very high risk to end with a scrambled system on your SD card.
Updates are inhibited with undervoltage and a throttled system for a ceratin reason.
It would be the same if you just unattach the motor warning light of the car. The issue is still there.