this is a recent update , im on qubes 3.1 . im also on whonix 12 i believe, i did not upgrade to whonix 13 so that is not the issure here i dont think. the error i get is as follows:
Whonix Meta Packages Test Result: Whonix-Workstation detected, but the meta package qubes-whonix-workstation is not installed. Did you accidentally uninstall it?
See also: Debian Packages - Whonix
If you know what you are doing, feel free to disable this check. Create a file /etc/whonix.d/50_whonixcheck_user.conf and add:
whonixcheck_skip_functions+=" check_meta_packages "