Hello, I can help you with this. You have a failure of one of the switches on the door lock.
The best thing to do is turn the unit off and back on and before the F8 appears start the self clean cycle. Check and see if the latch moves. Also you can try and jiggle the latch left and then right quickly. If neither thing works than you will have to order the door latch. Let me know if you end up needing the door latch and I can look it up for you. Thanks ,Sam