Help! bike makes clicking and cracking noise

when I pedal it makes the loud grinding noises you hear in the video. The noise is coming from the base of the pedals and I believe a rock is stuck inside. I’ve tried removing the pedals to clean it out but the screw is way to tight and I can’t get it off. I’ve tried compressed air and wd 40 but the problem doesn’t go away. Anyone know how to fix this? should I just ride it and hope it comes out on its own

Help! bike makes clicking and cracking noise
byu/KYJM8 inbikewrench

by KYJM8