@User, I followed your instructions about modifying the last line

.include

in

sky130_fd_pr__pfet_01v8_hvt__tt.corner.spice

, then I got a similar error for the

nfet

in the same

decap

. So I made the same change in

cells/nfet_01v8/sky130_fd_pr__nfet_01v8__tt.corner.spice

and this cleared all similar errors.I still have to modify the input stimuli before getting a proper simulation, so I can't claim full success yet.