Only 3 of my 4 VTOL Motors Spin

I’ve been trying to put together a Qplane, but I keep having the issue where only three of the four VTOL motors spin. I have tried multiple different ESCs, FCs, and motors. The ESCs have been calibrated, as well as the controller. This is all on a Cube Black, and the ESCs are NOT Dshot. I will attach the param file.
1.param (19.4 KB)