Laser does not turn off during empty feeds, grbl 1.1

Hello I have a problem with cnc/laser machine. I am using laserweb to cut pieces from thin plywood. It cuts well. But there is a problem. Laser does not turn off during empty feeds. Does any one know how to fix it?

Can you tell us a bit more about your setup? What controller and firmware are you using? How are the settings in firmware and laserweb?