I just installed Coherence mix package and followed the installation steps as required but I navigate to my protected route I get the following error

(UndefinedFunctionError) function Magnify.Web.Router.Helpers.session_path/2 is undefined (module Magnify.Web.Router.Helpers is not available)

Not sure what this error means as I’m new to Elixir

Here is my router

defmodule MagnifyWeb.Router do
  use MagnifyWeb, :router
  use Coherence.Router

  pipeline :browser do
    plug :accepts, ["html"]
    plug :fetch_session
    plug :fetch_flash
    plug :protect_from_forgery
    plug :put_secure_browser_headers
    plug Coherence.Authentication.Session
  end

  pipeline :protected do
    plug :accepts, ["html"]
    plug :fetch_session
    plug :fetch_flash
    plug :protect_from_forgery
    plug :put_secure_browser_headers
    plug Coherence.Authentication.Session, protected: true
  end

  scope "/" do
    pipe_through :browser
    coherence_routes()
  end

  scope "/" do
    pipe_through :protected
    coherence_routes :protected
  end

  scope "/", MagnifyWeb do
    pipe_through :browser # Use the default browser stack
    get "/", HomeController, :index
    get "/about", AboutController, :index
  end

  scope "/", MagnifyWeb do
    pipe_through :protected
    # add protected resources below
    resources "/magnets", MagnetController
    #resources "/magnets", MagnifyWeb.MagnetController
  end

  pipeline :api do
    plug :accepts, ["json"]
  end

end