Clothes locked inside the machine

See if you notice any water still inside the washing machine, if so run another spin cycle to try and remove it as it will not open if there is still water inside.
If you don't see any water inside, try unplugging it and letting it cool off, the lock should release after this

what make and model is it

Not sure if you're unable to open the door AFTER you stop the cycle. That may be normal operation as a safety measure (won't open until after your cycle has completed). However, if your model DOES allow for opening the door during cycle operations then your electronic door lock may be defective.

Unplug It and that will let it drain, and the door will unlock after it drains. About thirty seconds.

There may be an emergency door release tab inside the pump filter access door.....You probably have a faulty interlock which locks the door during operation and is not releasing...Not a big job for a tech.....Nomess

THE CAPACITOR IS FAULTY that discharges so door can be opened safely it should be at the rear of mc inside attached to the side of mc make sure u get correct microfarfad replacement

if clothes are still in washer? and machine has finished cycles? then handle broke so unable to open ??? your best option is to unplug/ and if necessary disconnect water supply hoses then remove the top screws from rear panel which also secure the top panel as you will observe ? then pull backwards top panel and loft off ? you now have access/visual of the door catch inside front machine look?? at the catch and you will see how it locks ? you can lever the catch gently and door opens to fit a new door catch is easy diy and not expensive if you are confident usual problem these break ? is the time delay micro switch sticks with age /moisture try dw40 and work plunger b4 you refit door back after replacing handle/catch assy

must change door lock switch.

Potential reasons for it: - Door Lock/Switch Assembly Failure - In this case it should be replaced. - Door Lock unit is broken or removed from the door. - Look for disconnected wires to the door Lock/Switch unit. - Door Lock/Switch unit Failure First disconnect the machine power cable from the wall socket. You should remove machine's top cover and then you will have an access to the door lock unit.