What is the problem?
Printer stopps randomly while printing
What did you already try to solve it?
Removed a WiFi Power Plug, other power supply for the raspberry, other position of the raspberry, Tape on the 5V power pin, put magnetic filter around the cable (USB and power)
Have you tried running in safe mode?
Did running in safe mode solve the problem?
Additional information about your setup
Marlin 1.1.8 (Github)
OctoPrint: Version 1.5.3
Raspberry Pi 3b
Firefox 85.0.2 (64-Bit)
I use the plugin Continuous Print Queue to print. For some days it prints finde without any issue. And then suddenly it stops while printing. If I look into the syslog of the pi it looks like restart. Is this the initial cause?