You were updating during the build of the latest update.
Wrong timing :/
You should be able to update now
this is weird, in your browser, can you access this url? https://portal.andrealphusgames.com/updates/prod/releases/loveandsexsecondbase/full/itchio/updates.json
73 days ago(+1)
Yes. It works. Downloaded and updated just fine. Realized I had to redownload the dlc as well for the update. I very much appreciate you going out of your way to resolve this for me.