GE Oven continuos beeping

After use today, my oven started beeping randomly. It took an extra long time to heat up today, longer than usual which is 10-12 minutes to get to 350 degrees.

After the oven was turned off, it would beep then beep 2-3 minutes later, then beep 10-15 times per minute.

No abnormal display or codes.

When the oven is turned on to bake, it runs for a few minutes, starts to get warm, then shuts itself off.

Any thoughts? Thanks