A similar thing happened to my Brother laser printer. It has a tiny rubber piece inside that serves as a bumper to quiet down a component that clicks while the paper travels through the printer. Over time, it gets sticky and winds up holding the component too long, which confuses the printer into thinking it has a paper jam, causing it to suddenly abort the print job partway through. The fix was to simply remove the rubber pad and it was back to normal -- albeit a little "clickier" than when it started!
Same kind of problem with an old HP LaserJet 1300 we still use. It began by it occasionally picking up multiple sheets of paper and jamming. It gradually got worse until the printer wasn't usable anymore.
The issue turned out to be the solenoid for the pick-up mechanism. When activated it should cause the pick-up mechanism to turn once. The solenoid once apparently had a small rubber pad to reduce noise. This had turned into goo and the solenoid would stick causing the mechanism to turn multiple times.
Fixed by removing the left-over goo and a piece of tape. Ten minute fix.
I had the same problem when my previous Brother printer was nearly ten years old, I did the same trick, and it worked. Most components might last almost forever, but things like rubber or glue, not so much.
Details if anyone is curious: https://www.reddit.com/r/printers/comments/r04j3s/trying_to_...