Noticed that 2.9.3 starts up with the locales set to "POSIX" or "C", which will cause pncconf to error out... best to add a note that menu-config must be run after after install, and set locale and timezone, then reboot.
There are some notes about using menu-config on the install page. Sounds like pncconf needs to be coded a bit more robustly. It should not fail for issues like that. We do set the locale to reasonable defaults here.
github.com/rodw-au/rpi-img-builder-lcnc/...9.3/userdata.txt#L39
