you can pull all the filters out and clean them up, that should have prevented the m/c itself (pumps, etc.) getting clogged. There might be an interlock to stop it running without filters for this reason.
Also most have a sump and float in the base so if there is a leak, from pumps and gaskets it doesn’t go all over the floor, it collects and if sufficient collects, then it trips the switch and the machine won’t run. Usually a plug on the front so you can drain that in a controlled manner. Might be worth checking that. Also bear in mind that mice eat the floats so that can affect their operation!
Finally remember that dishwashers are great at cleaning dishes but they don’t empty leftovers into the bin / compost for you. My dad who was looking after my sister’s house (rented out) was asked to go along and help a tenant where the dishwasher had packed up and found chicken bones and all sorts in the filters! FFS!