It was the “truck and company” that was cleared to cross. That’s probably 5+ vehicles you can see following the lead truck that were all approved. All while the jet was on short final. That controller lost situational awareness due to task saturation as a result of emergency aircraft on taxiway parallel to runway 13.
He said "Frontier 4195 stop there please". Then "stop stop stop stop truckon" By the time he clearly tells "truck 1" to stop, they're already entering the runway. Sounds like a bit of confusion.
The truck asks permission to cross. It is given. The truck declares it is going to cross, but the ATC replies "just stop there please".
Also, those runway entry lights look red to me. If so, that should have been a HUGE warning sign to the driver.