client - add error message if user account does not have battletag

config/prod.secret.exs.template

@@ -14,6 +14,7 @@ config :myapp, MyAppWeb.Endpoint,
 # Configure your database
 config :myapp, MyApp.Repo,
   adapter: Ecto.Adapters.Postgres,
+  hostnamae: "localhost",
   username: "postgres",
   password: "postgres",
   database: "myapp_prod",