(dual arming switch option) arming failure

3dr pixhawk mini ___ It had been awhile since i’ve used this controller so I downloaded 4.0.2 firmware and when I tried to arm, I received a (dual arming switch option) error. I’ve tried using the aux switch that came with this controller instead of the one on the side of the control, same thing i’ve never seen this error before. Can any one help?

I would guess you have arm/disarm channel option setup on two channels, check through your RCx_OPTION params for duplicates