QuietGuard door won't close

Dishwasher Repair
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1

Kenmore (Frigidaire) standard QuietGuard dishwasher. The dishwasher was running and I opened the door to add a dish. Now the door will not close, the latch will not click. Is something locking it? Is there a sequence of controls I can press?

I’ve turned the circuit breaker on and off. The green washing light will go on, but it blinks. Water has not drained.

3

I’ve pushed on the door many times.

4

Yes tub latch is secure. There seems to be no movement of the door latch mechanism when I move the latch.