My kenmore dryer 81122 has Rotating blinking lights.

My kenmore dryer 81122 has Rotating blinking lights.

i put the dryer recently on normal 1 hour cycle , no wrinkle guard and after a few minutes it shows rotating blinking lights. Sometimes it stops mid cycle. There is no wrinkle guard on . It never did this before, first time! Can anyone tell me what is wrong with the dryer.

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