What is the problem?
octopi on rasp 3 stops during print. temperatures remain at set levels and hotend does not move off print, also it can happen at anytime throughout print. What did you already try to solve it?
ive done the easy things like replace the power supply (rasp pi one) changed the usb cable and changed end gcode (as a few stoppages happened at 99%) also reinstalled octopi a few times
Have you put a start code from another slicer in your actual slicer?
The placeholder {travel_speed} should have been replaced by a value pb the slicer, but your slicer can not interpret this placeholder.
What slicer do you use?