Неизвестный параметр returnUrl

Question

Я сталкиваюсь с проблемой использования идентификатора для аутентификации пользователя в проекте, над которым я работаю. Я понятия не имею, почему, но после выхода public void Configuration(IAppBuilder app) параметр returnUrl добавляется в мой URI и приводит к сбою, потому что URI слишком длинный.

Вот ури вернулся

http://localhost:51092/Login/Index?ReturnUrl=%2FLogin%2FIndex%3FReturnUrl%3D%252FLogin%252FIndex%253FReturnUrl%253D%25252FLogin%25252FIndex%25253FReturnUrl%25253D%2525252FLogin%2525252FIndex%2525253FReturnUrl%2525253D%252525252FLogin%252525252FIndex%252525253FReturnUrl%252525253D%25252525252FLogin%25252525252FIndex%25252525253FReturnUrl%25252525253D%2525252525252FLogin%2525252525252FIndex%2525252525253FReturnUrl%2525252525253D%252525252525252FLogin%252525252525252FIndex%252525252525253FReturnUrl%252525252525253D%25252525252525252FLogin%25252525252525252FIndex%25252525252525253FReturnUrl%25252525252525253D%2525252525252525252FLogin%2525252525252525252FIndex%2525252525252525253FReturnUrl%2525252525252525253D%252525252525252525252FLogin%252525252525252525252FIndex%252525252525252525253FReturnUrl%252525252525252525253D%25252525252525252525252FLogin%25252525252525252525252FIndex%25252525252525252525253FReturnUrl%25252525252525252525253D%2525252525252525252525252FLogin%2525252525252525252525252FIndex%2525252525252525252525253FReturnUrl%2525252525252525252525253D%252525252525252525252525252FLogin%252525252525252525252525252FIndex%252525252525252525252525253FReturnUrl%252525252525252525252525253D%25252525252525252525252525252FLogin%25252525252525252525252525252FIndex%25252525252525252525252525253FReturnUrl%25252525252525252525252525253D%2525252525252525252525252525252FLogin%2525252525252525252525252525252FIndex%2525252525252525252525252525253FReturnUrl%2525252525252525252525252525253D%252525252525252525252525252525252FLogin%252525252525252525252525252525252FIndex%252525252525252525252525252525253FReturnUrl%252525252525252525252525252525253D%25252525252525252525252525252525252FLogin%25252525252525252525252525252525252FIndex%25252525252525252525252525252525253FReturnUrl%25252525252525252525252525252525253D%2525252525252525252525252525252525252FLogin%2525252525252525252525252525252525252FIndex%2525252525252525252525252525252525253FReturnUrl%2525252525252525252525252525252525253D%252525252525252525252525252525252525252FHome%252525252525252525252525252525252525252FIndex 

Плюс отображается список ошибок, и физический путь моего контроллера странный, потому что Index - это функция, которая должна вызываться, но кажется, что это файл

C:\Projects\vs\project\project\Login\Index

вот моя функция cConfiguration

app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                CookieSecure = CookieSecureOption.Always,
                LoginPath = new PathString("/Login/Index"),
                Provider = new CookieAuthenticationProvider
                {
                }
            });

Если кто-то видит что-то не так

Редактировать: вот моя функция Index в контроллере входа

    // GET: Login
    [HttpGet]
    public ActionResult Index()
    {
        return View();
    }

using Gesmar_intra.Models;
using Gesmar_intra.Models.Entite;
using Microsoft.AspNet.Identity.Owin;
using System.Threading.Tasks;
using System.Web;
using System.Web.Mvc;

namespace Gesmar_intra.Controllers
{
    public class LoginController : Controller
    {
        protected Gesmar db = new Gesmar();

        private ApplicationSignInManager _signInManager;

        public LoginController()
        {
        }

        public LoginController(ApplicationSignInManager signInManager)
        {
            SignInManager = signInManager;
        }

        public ApplicationSignInManager SignInManager
        {
            get
            {
                return _signInManager ?? HttpContext.GetOwinContext().Get<ApplicationSignInManager>();
            }
            private set 
            { 
                _signInManager = value; 
            }
        }


        // GET: Login
        [HttpGet]
        public ActionResult Index(string returnUrl)
        {

            return View();
        }

        [HttpPost]
        public ActionResult Index(FormCollection form)
        {
            var username = Request.Form["username"];
            var password = Request.Form["password"];
            var passHash = Utilisateur.GenerateSHA256String(password);
            if (Utilisateur.CheckAccount(username, "APRRR", password))
            {
                password = "";
            }
            var result = SignInManager.PasswordSignIn(username, password, false, shouldLockout: false);
            switch (result)
            {
                case SignInStatus.Success:
                    return RedirectToAction("Test", "Login");
                case SignInStatus.LockedOut:
                    return View();
                case SignInStatus.RequiresVerification:
                    return View();
                case SignInStatus.Failure:
                default:
                    ModelState.AddModelError("", "Tentative de connexion non valide.");
                    return View();
            }
        }

        [Authorize]
        public ActionResult Test()
        {
            return View();
        }
    }
}