What is the problem?
OctoPrint regularly loses the connection to the printer with a "Servial Exception" which stops the print.
What did you already try to solve it?
I tried everything from # OctoPrint randomly loses connection to the printer with a "SerialException".
I have a good power supply, there are no other USB devices, nothing else is using the printer, I've tried different cables and reinstalled Octoprint.
/boot/cmdline.txt also didn't work.
Send: N1728 G0 F3000 X9.963 Y94.815*69
Unexpected error while reading serial port, please consult octoprint.log for details: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:2823
Please see https://faq.octoprint.org/serialerror for possible reasons of this.
Changing monitoring state from "Printing" to "Offline (Error: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:2823)"
Connection closed, closing down monitor
Additional information about your setup
I'm running the latest OctoPrint version on a Raspberry Pi 3 B connected to an Ender5 with TH3D Firmware.
It has been running fine for weeks but now the error occurs every print, maximum 15 minutes in.
Any tips for further troubleshooting would be much appreciated.