Hey Guys, I got this error on ngspice any idea why this is the case Error: unknown subckt: xm1 vout vin vdd vdd sky130_fd_pr__pfet_01v8 l=0.15 w=1 nf=1 ad={int((nf+1)/2)*w/nf*0.29} as={int((nf+2)/2)*w/nf*0.29} pd={2*int((nf+1)/2)*(w/nf+0.29)} ps={2*int((nf+2)/2)*(w/nf+0.29)} nrd={0.29/w} nrs={0.29/w} sa=0 sb=0 sd=0 mult=1 m=1 Simulation interrupted due to error!