bosch dishwasher leaking just in the rinse cycle what would be the problem help please?

[Juan Carlos]

our dishwasher goes to throw the cleaning cycle when gets to the rinse wather leaks out from the bottom side of the door , when we press stop and drain the wather does drain out when we open the door the dishes are clean and not slapy we cant find any places with rust why would be leaking ?
could be the rubber door seal please help