I tried the public instance at “links.adminforge.de”, and this extension didn’t work at first, giving me continuous errors. I finally found the culprit. The extension has an *optional* permission, “Access your data for all websites” (I had it off for good reason). But this extension does NOT work without this permission! So it’s optional but... required. Ah ah..... Please FIX. – P.S. Linkwarden handles YouTube links really badly.