** (CompileError) lib/plug_proxy/response.ex:45: unknown key :before_send for struct Plug.Conn

[geofflangenderfer]

having trouble compiling with following dependencies..any advice?

$ cat mix.exs
...
  defp deps do
    [
      {:absinthe, "1.7.0"},
      {:absinthe_plug, "1.5.8"},
      {:absinthe_phoenix, "2.0.2"},
      {:combine, "~> 0.10"},
      {:cowboy, "~> 1.0"},
      {:dataloader, "~> 1.0.0"},
      {:distillery, "~> 2.0.10"},
      {:httpoison, "~> 1.1"},
      {:murmur, "~> 1.0"},
      {:phoenix, "~> 1.6.7"},
      {:phoenix_pubsub, "~> 2.1.1"},
      {:phoenix_ecto, "~> 4.4.0"},
      {:plug_proxy, "~> 0.4.0"},
      {:postgrex, ">= 0.0.0"},
      {:phoenix_html, "~> 3.0.0"},
      {:phoenix_live_reload, "~> 1.0", only: :dev},
      {:phoenix_markdown, "~> 1.0"},
      {:poison, "~> 3.1"},
      {:porcelain, "~> 2.0.3"},
      {:quantum, "~> 2.2"},
      {:timex, "~> 3.0"},
      {:sweet_xml, "~> 0.6"},
      {:sentry, "~> 6.2.1"}
    ]
  end