If you are handy with electronics, you can open the printer and clean the pads with warm water and detergent, letting them dry completely before reinserting them. If you are uncomfortable doing this, it is highly recommended to take the printer to an authorized Epson service center. They will replace the pads and reset the counter professionally.
Turn the printer off, wait 30 seconds, and turn it back on in Normal Mode. The error should be gone. Epson M2120 Resetter
(disable antivirus temporarily — restore after). If you are handy with electronics, you can