Regarding being a new user, check out New Member Information for instructions on upgrading yourself to be able to upload project files.
Regarding crash, I’m just guessing that there is something wrong with the specific model you have so ngspice is crashing and bringing down KiCad with it. If that guess is correct, the relevant bug report is tracked here (though unfortunately no timeline for fixing the issue is given yet): Spice simulator cause Kicad to crash if netlist includes a spice library with syntax errors (#14568) · Issues · KiCad / KiCad Source Code / kicad · GitLab