The RouteData must contain an item named 'path' with a non-empty string value.

Stack Trace:


[InvalidOperationException: The RouteData must contain an item named 'path' with a non-empty string value.]
   System.Web.Routing.RouteData.GetRequiredString(String valueName) +2341517
   ExpressCss.AssetRouteHandler.GetHttpHandler(RequestContext requestContext) +66
   System.Web.Routing.UrlRoutingModule.PostResolveRequestCache(HttpContextBase context) +9709656
   System.Web.Routing.UrlRoutingModule.OnApplicationPostResolveRequestCache(Object sender, EventArgs e) +82
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69

public static void RegisterRoutes(RouteCollection routes)
       {
           routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

           routes.MapRoute(
               name: "Default",
               url: "{controller}/{action}/{id}",
               defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
           );}