Gallery unlock, should work across any version, to use download the file as a .rpy into the game’s `game` folder (click on the attachment, press Ctrl+s, select the All files (*.*) entry from the file type dropdown and after that remove .txt from the file name)

It looks like the gallery also wasn’t updated and is blocked when progressed into new content, you can use the fix_gallery.rpy file to fix that – but it won’t update the gallery variables with the game’s new values, so the unlocker needs to be used if routes that are in the gallery were progressed and you want to view them