What is the problem?
After it starts printing, octoprint stops with the error : Offline (Error: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:2793)
What did you already try to solve it?
Replaced USB cable and purchased a new Power Supply for my Pi.
serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support!)
serial.log (148 Bytes) octoprint(1).log (1.7 MB)
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible)
The snappy web interface for your 3D printer
The ready-to-go Raspberry Pi image with OctoPrint
Version 0.16.0, running on Raspberry Pi 3 Model B Plus Rev 1.3
Wifi Duet Board
Power Supply 5v 2500ma
Replaced USB cables