Kitchenaid dishwasher not draining

In short, you turn the DW on and the water comes in, it goes through a wash cycle, and then when the time comes for it to drain, it shuts off with water standing in the bottom.

How do I proceed from here on this particular model? What parts do I need to check/test and how do I go about it?

Many thanks.

Useless forum. Won’t make the mistake of posting here again.