The view \'Index\' or its master was not found. The following locations were searched:
~/Views/ControllerName/Index.aspx
~/Views/ControllerName/Index.ascx
~/Views/Sh
This error was raised because your Controller method name is not same as the View's name.
If you right click on your controller method and select Go To View (Ctrl+M,Ctrl+G), it will either open a View (success) or complain that it couldn't find one (what you're seeing).
return view("viewName")
in the method.