Custom login page

So I am trying to create a custom login page instead of the EPi Server. Right now I have created a custom controller and model and page using this tutoiral

https://world.episerver.com/blogs/Daniel-Ovaska/Dates/2016/6/creating-a-custom-login-page/

The thing is when I type http://localhost:53067/LoginPage/Index in the browser window I get null for the currenPage in the below code

        public ActionResult Index(LoginPage currentPage, [FromUri]string ReturnUrl)
        {
            /* Implementation of action. You can create your own view model class that you pass to the view or
             * you can pass the page type for simpler templates */
            var model = new LoginModel(currentPage);
            model.LoginPostbackData.ReturnUrl = ReturnUrl;
            return View(model);
        }

Does anyone know what am I missing here?