Possibly the discharge hose from the dishwasher to the garbage disposal is leaking.
Also, the garbage disposal has to have a clean drain to pass the dishwasher water to.
Run the washer and trace the leak.
Post back what you find.
I stuck a coat hanger into the dishwasher discharge where it comes into the disposal. must have dislodged something, seems to be working ok now. the water was coming out very fast and hitting the far side of the disposal wall and coming up out of the sink drain