Versions are OS-friendly packages. The files run are typically not native code, so it needs mono.
I’ve run .zip installs on Windows and Linux. I think a full .zip content is what autoupdate installs.
Exploring FreeNAS and TrueNAS posts (which you’ll possibly have to do) shows it worked here:
is avoided. I guess you’re installing to a jail? There are forum posts on setting up needed access.
TrueNAS SCALE 21.04 makes its Debut is their new Linux-based version (adds new challenges).
SCALE App package for TrueNAS SCALE #4425 mentions, but lack of resources gets in the way.