ERROR: Your schematic contain unknown model jfet_n_pspice

I am using jfet in my circuit and while converting kicad to ngspice i am getting this error.

eSim 22-03-18, 12:42 a.m. SravaniInturi
Use FET from the eSim_devices library.
22-03-18, 11:33 a.m. Gloria

But now while doing simulation I m getting this error....."Error while opening python plotting Editor. Please look at the console for more details"
even after doing all the things mentioned in the forum earlier
23-03-18, 10:41 p.m. SravaniInturi

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