How Can I Solve This Error When I Click On Image

your URL should be meaningful

/ControllerName/ActionName

/Home/Index

Home -> ControllerName
Index -> ActionName with in that Controller

You should understand the routing in MVC. This is a simple issue.
Since you are using MVC, this deals with controller and Actions inside.
That is when the request is send, mvc router by default expects a controller and an action with parameters if any.
You can check the above statement inside the App_Start->Routeconfig.cs

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 }
           );
       }

This is how the route looks. So when you type Index.aspx/Index.cshtml(if Razor), then it will throw 404 not found error as no such Action exists inside Home controller with Index.aspx name.
I hope this clears your query.
thanks.