What is the problem?
I print using the SD card on my i3MK3S. When I clicked Cancel on my browser, the print process was stopped. However, unlike printing directly from Octoprint, it did not actually cancel the print because when I tried to print another file from the SD card, the nozzle would just start from the middle and printed mid-air. This has happened many times. How come?
What did you already try to solve it?
To prevent this from happening, I would need to go to the printer's LCD to choose Stop the print and Yes. Then, I could do the next print without issue.
Additional information about your setup
OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible
Mac OS 11.5.2
OctoPrint version 0.18.0
Prusa i3MK3S