My Sermoon D1 stopped heating up the extruder

I've printed a few things and they printed perfectly fine, but after trying to start a new one it gave me the "Heating Failed! Cycle Power!" error after after the extruder stayed at 22 degrees for about a minute. The bed heats up perfectly fine and I checked the cords and they are all plugged in. I'm not sure what the problem is as it worked perfectly fine a few hours ago, but the extruder simply won't heat up.