I was 4 hours into a print and I noticed my printer was moving but not printing. The filament must have broke off at the extruder just past the gear. It was spiraling around outside the extruder. I stopped the print and tried to feed it back in but it wouldn’t go. I printed a bit of something else to try to clear the tube and then was able to feed the filament in. It seems like its working now.
I don’t know what would have caused this to break off. Everything was printing fine.