https://duckduckgo.com/?q=ngspice+Error%3A+vector+time+not+found&ia=web
Leads to:
https://forum.kicad.info/t/error-vector-v-not-found/15155/7
which suggests a typo in the “time” net as a hint to look further into.
I needed about 2 minutes to do that, did not read the whole KiCad post.