I used the xcode tool "sarfari-web-extension-converter" and it worked well for a bit, the app built, and the extension was installed in Safari. But then I must've done something weird because now I build and run my XCode app (for the extension) and it says "***'s extension is currently on." With the button to "Quit and Open Safar Extensions Preferences..." But when I do that then the extension is not installed. The extensions tab shows "No Extensions". How do I get it re-installed so I can continue developing?