@troubadour is missing in action apparently. Unfortunately! No known reason.
anon-connection-wizard is not ready yet. whonix-setup-wizard is broken Whonix 13 release also.
Since I can fix neither in time, I think the best course of action is to use the working whonix-setup-wizard Whonix 12 release branch as starting point, then see git log Whonix12..master and backport relevant stuff such as stable-proposed-updates and other relevant fixes (tor -> tor@default and what else).