no function clause matching in anonymous fn/2 in Plug.Conn.merge_resp_headers/2 about cors_plug HOT 7 CLOSED

plug CORSPlug, origin: ["https://localhost:5000", "http://localhost:5000"], headers: ["Content-Type", "x-csrf-token"]

  3) test logins user with correct password (Interface.API.LoginControllerTest)
     test/controllers/api/login_controller_test.exs:13
     ** (FunctionClauseError) no function clause matching in anonymous fn/2 in Plug.Conn.merge_resp_headers/2

     The following arguments were given to anonymous fn/2 in Plug.Conn.merge_resp_headers/2:

         # 1
         {"access-control-expose-headers", []}

         # 2
         [{"cache-control", "max-age=0, private, must-revalidate"}, {"x-request-id", "i7s0iaroobcmmpivhtq7l42csh74mrq2"}, {"vary", "Origin"}, {"access-control-allow-origin", "null"}]

     code: conn = post conn, login_path(conn, :login), %{email: user.email, password: @valid_password}
     stacktrace:
       (plug) lib/plug/conn.ex:663: anonymous fn/2 in Plug.Conn.merge_resp_headers/2
       (elixir) lib/enum.ex:1826: Enum."-reduce/3-lists^foldl/2-0-"/3
       (plug) lib/plug/conn.ex:663: Plug.Conn.merge_resp_headers/2
       (cors_plug) lib/cors_plug.ex:33: CORSPlug.call/2
       (interface) lib/interface/endpoint.ex:19: Interface.Endpoint.phoenix_pipeline/1
       (interface) lib/interface/endpoint.ex:19: Interface.Endpoint.call/2
       (phoenix) lib/phoenix/test/conn_test.ex:224: Phoenix.ConnTest.dispatch/5
       test/controllers/api/login_controller_test.exs:14: (test)

  plug CORSPlug, [
      origin:      "*",
      credentials: true,
      max_age:     1728000,
      headers:     ["Authorization", "Content-Type", "Accept", "Origin",
                    "User-Agent", "DNT","Cache-Control", "X-Mx-ReqToken",
                    "Keep-Alive", "X-Requested-With", "If-Modified-Since",
                    "X-CSRF-Token", "company"],
      expose:      [],
      methods:     ["GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"]
    ]
    plug Web.Router

  plug CORSPlug, headers: ["*"]
  plug Web.Router