Thank you for your bug report.
Indeed it's obvious from the code was is wrong and should be trivial to fix
functions/defaults.sh has that code
' ubuntu) LB_SYSLINUX_THEME="${LB_SYSLINUX_THEME:-ubuntu-oneiric}" ;;'
Or the -oneiric binary got removed in xenial so it's probably a matter for doing s/oneiric/xenial there
Tagging rls for foundations review they know better the image build tools and what modes are supposed in Ubuntu
Thank you for your bug report.
Indeed it's obvious from the code was is wrong and should be trivial to fix
functions/ defaults. sh has that code
' ubuntu) THEME=" ${LB_SYSLINUX_ THEME:- ubuntu- oneiric} "
LB_SYSLINUX_
;;'
Or the -oneiric binary got removed in xenial so it's probably a matter for doing s/oneiric/xenial there
Tagging rls for foundations review they know better the image build tools and what modes are supposed in Ubuntu