def application do
    [
      applications: [:mongodb, :poolboy],
      mod: {Schedoo.Application, []},
      extra_applications: [:logger, :runtime_tools]
    ]
  end

** (Mix) Could not start application schedoo: Schedoo.Application.start(:normal, []) returned an error: shutdown: failed to start child: SchedooWeb.Endpoint
    ** (EXIT) shutdown: failed to start child: {:ranch_listener_sup, SchedooWeb.Endpoint.HTTP}
        ** (EXIT) exited in: :gen_server.call(:ranch_server, {:set_new_listener_opts, SchedooWeb.Endpoint.HTTP, 16384, %{max_connections: 16384, num_acceptors: 100, socket_opts: [port: 4000]}, %{env: %{dispatch: [{:_, [], [{:_, [], Phoenix.Endpoint.Cowboy2Handler, {SchedooWeb.Endpoint, []}}]}]}, stream_handlers: [Plug.Cowboy.Stream]}, [SchedooWeb.Endpoint.HTTP, :ranch_tcp, %{max_connections: 16384, num_acceptors: 100, socket_opts: [port: 4000]}, :cowboy_clear, %{env: %{dispatch: [{:_, [], [{:_, [], Phoenix.Endpoint.Cowboy2Handler, {SchedooWeb.Endpoint, []}}]}]}, stream_handlers: [Plug.Cowboy.Stream]}]})
            ** (EXIT) no process: the process is not alive or there's no process currently associated with the given name, possibly because its application isn't started