You made shot connected the drain and the gate by stubs...
Place DC blocking capacitors before matching circuits because short stubs make the gate and drain short circuit..
Also, the length of the shorted stubs makes no sense to me. They are very short (~2mm) and I don't think this is the correct length for impedance matching your transistors.
In this linear simulation, the bias supply doesn't have an effect, but that looks wrong. As Bigboss mentioned it is shorted to ground, and the entire configuration makes no sense (two 5V sources, R3 in series with R4, wrong gate bias voltage).