: Run the Adjprog.exe file on your computer as an administrator.
Epson sets the threshold very low. In many cases, the error appears even when the waste pad is only 10-15% full. The printer forces you to take it to a service center. Epson L3115 Printer Resetter Adjustment Program
Yes, many versions are free, but they may come from unofficial, ad-supported websites. Paid versions ($10-$20) often include better support and no malware. : Run the Adjprog