Failed to connect

Phoenix
1

Using ElephantSQL. Did fly secrets set DATABASE_URL=xxx

 2023/10/28 22:11:48 listening on [fdaa:3:681e:a7b:a062:e20e:49bc:2]:22 (DNS: [fdaa::3]:53)
  22:11:49.937 [error] Postgrex.Protocol (#PID<0.163.0>) failed to connect: ** (DBConnection.ConnectionError) tcp connect (suleiman.db.elephantsql.com:5432): non-existing domain - :nxdomain
2

This may be an IPv6 mismatch, actually.

Did you make any changes to runtime.exs or to ECTO_IPV6?