Dryer buzzer doesn't stop bussinf

Dryer just started to reach the end of the timer cycle and the buzzer comes on but doesn’t stop buzzing. Everything else works. We have open the door for the timer to stop or turn the timer. I also noticed that if I turn the timer while the door is open and then shut the door the dryer starts running.
Bad timer?
Bad Buzzer?
Door Switch?
Help… Thanks.

I’d check the push to start switch on the control panel. see if its stuck on internally.

Its part 12 and no longer available. I did see used ones on E8ay. 33001618

Parts for Maytag MDE9206AYW: Control Panel Parts - AppliancePartsPros.com