I am tring use with maru (https://maru.readme.io/docs), but when I send signed request, I get this error:

%HTTPoison.Response{
body: "Authorization Failed: %Protocol.UndefinedError{description: "", protocol: Enumerable, value: %Plug.Conn.Unfetched{aspect: :query_params}}",
headers: [
{"access-control-allow-origin", "*"},
{"cache-control", "max-age=0, private, must-revalidate"},
{"content-length", "137"},
{"date", "Wed, 08 Apr 2020 17:20:05 GMT"},
{"server", "Cowboy"}
],

Any idea?

PLUG:

defmodule Fintech.API do

use Fintech.Server
use Maru.Router
plug PlugSigaws
plug Plug.Logger

before do
plug Plug.Static, at: "/", from: List.to_string(:code.priv_dir(:fintech)) <> "/www"
end

plug Plug.Parsers,
pass: ["/"],
json_decoder: Jason,
parsers: [PlugSigaws.Parsers.JSON, PlugSigaws.Parsers.URLENCODED, :urlencoded, :json, :multipart]

maru

use Maru.Router
version("v1")

get do
conn |> text("It works !")
end

...

...