Leak under dishwasher wash and rince

The problem was the rubber end on the upper shower head pipe at the pump. Not to hard . Slide dishwaser half way ouy the ptpe is on the right side.The bottom end is is just a clamp the top drops in from the top, inside there is a nut above the upper shower head. You can unsrew the nut with your fingers, it is right above the upper shower head.There it a washer at the top of the pipe that should be replaced that doesnot come with the pipe