Chosen Solution
The rollers are spinning but the paper is not being pulled forward for printing.
I suspect the rubber on the rollers are worn out so they can no longer grip the paper. You can spray this on the rubber and it will work again. https://www.amazon.com/Max-Professional-…
Canon printers have a function where they can self-clean their rollers. It might need further service, but it’s worth a shot. See https://support.usa.canon.com/kb/index?p…