I am working on Elixir, using Erlang built-in :httpc function to perform a get request.  defp get_gravatar(primary_email, userid) do     hash =       primary_email       |> String.trim()       |> String.downcase()       |> :erlang.md5()       |> Base.encode16(case: :lower)      Application.ensure_all_started(:inets)     Application.ensure_all_started(:ssl)      img = 'https://www.gravatar.com/avatar/#{hash}?s=150&d=404'      if {:ok, {status, header, body}} = :httpc.request(:get, {img, []}, [], ...