Got SERVFAIL reply from 127.0.0.53

My Mastodon instance is not showing previews of images from remote servers. I have tried to run RAILS_ENV=production /home/mastodon/live/bin/tootctl media refresh --days 0.2 And get a lot of errors of the form > Error processing 114092630496524137: failed to connect: No address for media.mstdn.social on https://media.mstdn.social/media_attachments/files/114/092/629/337/741/863/original/9539833c10d5b81d.mp4 I have narrowed the problem down to resolve, I think. When I call nslookup media.mstdn.social I get: > ;; Got SERVFAIL reply from 127.0.0.53, trying next server I had problems earlier with wget, curl and similar, so I added Hetzner's dns-servers. That solved the problems, but not for mastodon. So I guess I need to get 127.0.0.53 to work? resolvectl status > Global > Protocols: -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported > resolv.conf mode: static > > Link 2 (eth0) > Current Scopes: none > Protocols: -DefaultRoute -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported Any idea what to do?