I have no idea what to do
i got the same thing!
glad i'm not alone at least
You need to update the base game. Putting the DLC in the older version of Our Life will mean it can't load.
how do you update the base game?
You can use Butler on Itch to update the version you have, or if you don't use Butler you have to delete the whole folder and download it again. Your saves will remain even if you deleted the Our Life folder.
