I ran into this at one point as well. You can unset the private instance flag manually in the database and restart to get up and running again.First connect to psql:docker-compose exec postgres psql -U lemmyThen run an update to unset the flag:lemmy=# update local_site set private_instance = false;Which should update 1 row (only 1 row in that table if you're on a typical install)
Same here. Would recommend both!