What are the most common causes of 'Paper Jam' errors on an Epson L120 printer?

The most frequent causes of 'Paper Jam' errors on the Epson L120 include: insufficient paper in the tray, paper that is wrinkled or damaged, paper that is too thick for the printer, incorrect paper type selected, or a physical obstruction within the paper path. Regularly cleaning the rollers and checking for debris can often resolve these issues.