Kyocera ECOSYS M2640idw print 4 times instead of 1 using cups+raspberrypi

[jaarac]

I installed an ecosys printer M2640idw on a raspberry pi (raspbian 10) using the PPD provided by the manufacturer, but when I send one copy it prints four copies. I also tried a generic ppd (Generic PCL 6/PCL XL) and it does the same thing.

I attach the PPD and the cups error_log.

PPD: https://drive.google.com/file/d/1uK7ynzNxPicHXTc8D-OEZC_BEA4TxH_Z/view?usp=sharing

Thanks for your help.