Code P0038 immediately after spark change

Hey guys.

Went and had my spark plugs changed, I drove in with a perfectly functioning car. No check engine light.

I picked up the car and got down the street and got a check engine light. Plugged in an OBD and got code P0038. Never had an issue before.

It's a 2010 with 137,000 on it. I'm not much of a car guy so forgive me for my ignorance. Is this a common problem? Could it have been inflicted by my mechanic changing the plugs? I'd appreciate some advice.

Thanks very much