title: The current type, is an interface and cannot be constructed. Are you missing a type mapping?
body: <p>Why it is not working?</p>
  
  <p>This is my controller.</p>
  
  <pre><code>public class OperatorsController : BaseController
  {
      private readonly IOperatorService userService;
      public OperatorsController(IOperatorService userService)
      {
          this.userService = userService;
      }
  
      public ActionResult Index()
      {
          return View();
      }
  }
  </code></pre>