Dishwasher Bosch SMS 6032 short circuit when close door?

My Bosch dishwasher was causing the switchboard to trip when door was closed.

I opened it and checked the pipes - no sign of any blockage. I left it on its side for a whole evening and next morning it was working again. It leaked some water to the kitchen floor but not sure from where.

However, just now, it tripped the switchboard in the middle of the wash. And it keeps tripping when the door is closed. It has some water but not sure if that is normal or it is causing the short circuit.

Is this something fixable by an amateur or do I need to call an engineer?

Thanks