Error creating view in web project aspel, net of visual studio

This is the code of the MarcaController file

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Tienda.Models;

namespace Tienda.Controllers
{
    public class MarcaController : Controller
    {
        private TiendaConexion db = new TiendaConexion();
        // GET: Marca
        public ActionResult Index()
        {
            return View(db.Marca.ToList());
        }

        // GET: Marca/Details/5
        public ActionResult Details(int id)
        {
            return View();
        }

        // GET: Marca/Create
        public ActionResult Create()
        {
            return View();
        }

        // POST: Marca/Create
        [HttpPost]
        public ActionResult Create(FormCollection collection)
        {
            try
            {
                // TODO: Add insert logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }

        // GET: Marca/Edit/5
        public ActionResult Edit(int id)
        {
            return View();
        }

        // POST: Marca/Edit/5
        [HttpPost]
        public ActionResult Edit(int id, FormCollection collection)
        {
            try
            {
                // TODO: Add update logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }

        // GET: Marca/Delete/5
        public ActionResult Delete(int id)
        {
            return View();
        }

        // POST: Marca/Delete/5
        [HttpPost]
        public ActionResult Delete(int id, FormCollection collection)
        {
            try
            {
                // TODO: Add delete logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }
    }
}

When I try to create the view for the index I get this error