Since Elixir 15, releases fail with error "Postgrex.Protocol failed to connect: ssl connect: Options can not be combined"

the default Fly Postgres server, last time I used it, doesn’t have SSL enabled for connections, so maybe a default has changed with hex package updates. Your error about SSL implies your trying to connect over SSL when the server isn’t configured for it.

In my config somewhere I would have something like this for a Fly DB:

    config :spandex_app, SpandexApp.Repo,
      socket_options: [:inet6],
      ssl: false
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