Broken redirect on https://www.torproject.org/projects/torbrowser/RecommendedTBBVersions
https://www.torproject.org/projects/torbrowser/RecommendedTBBVersions currently redirects to a nonexistent location. This URL is used by Whonix's update-torbrowser script to discover versions of Tor Browser (it does not follow redirects by default, anyway).
The correct location seems to be https://2019.www.torproject.org/projects/torbrowser/RecommendedTBBVersions.