Stove won’t shut off

Ok I have a typical 3 burner stove with a fish grill in this apartment I'm in. Boiled some water for a meal. Took the lever for gass all the way down but the flames don't go out. There is no extinguishing function but the gas doesn't shut off.

I don't want to blow out the flame and just have gas in the apartment

by CCPPERR