3rd gen skid plate welded but inside frame

I have 2020 Tacoma and I think when Toyota was changing my oil they took off my skid plate when I was taking off my skid plate today the 2 back bolts one of them was spinning through so I reached my hand in and saw the welded nut snapped off did this happen to anyone ?

 

Typo in your title

sounds like the technician hit your bolt with an impact, one of the welded nuts on my ARB skid got stripped out by the dealership tech’s

 

Yeah that’s what I was thinking how did you fix it

 

It's a 20. Take it back to dealer and ask them to fix their shit and use a tq wrench this time