Dryer stopped after 5-10 min of running

I have the model 110.72992100 Kenmore Elite Gas Dryer. Dryer stops and the timer knob continues to turn until it reaches the end of the cycle. It does this either on Auto Moisture Sensing or Timed Dry operation. The dryer heats just fine although the top gets pretty warm. I have recently had the vents cleaned out so there is good airflow from the dryer to outside the house. The dryer is inside the laundry room so it doesn’t get real hot. I have read about all the bad boards and I have looked at mine but I see no burn marks. Any and all help is appreciated.