My code snippet.

def make_request(path, params) do
    url = construct_url(path, params)
    headers = []

    case HTTPoison.get(url, headers) do
      {:ok, %HTTPoison.Response{status_code: 200, body: body}} -> 
        case Poison.decode(body) do
          {:ok, decoded} -> {:ok, decoded}
          {:error, error} ->{:error, error}
        end
      {:ok,  %HTTPoison.Response{status_code: status_code }} -> 
          {:error, status_code}
      {:error, error} -> {:error, error}
    end
  
  end

  defp construct_url(path, params) do
    path <> params
  end

the above code is working fine as expected however if I add

headers = [{“Accept-Encoding”,“gzip, deflate”}, {“Content-Type”, “application/json”}]

It gives error

{:error, {:invalid, <<31>>, 0}}

Anything I am doing it wrong here