<subsonic-response status="failed" version="1.16.1" xmlns="http://subsonic.org/restapi">
  <error code="0" message="Error connecting to Subsonic server: Octo has no valid Navidrome URL. Set SUBSONIC_URL (Subsonic__Url) to your Navidrome server, e.g. http://192.168.1.10:4533. It must be an absolute URL the Octo container can reach, not localhost." />
</subsonic-response>