Hi,

I have been implemented Episerver Insight like bellow.

It very strange, I don't know why i can't get instance of ICmsTrackingService even i already registered it.

Can anybody show me clue?

System.InvalidOperationException: An error occurred when trying to create a controller of type 'AVG.Web.Controllers.Pages.StandardPageController'. Make sure that the controller has a parameterless public constructor. ---> System.MissingMethodException: No parameterless constructor defined for this object.
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.Activator.CreateInstance(Type type)
at System.Web.Mvc.DefaultControllerFactory.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType)
--- End of inner exception stack trace ---
at System.Web.Mvc.DefaultControllerFactory.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType)
at System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory)
at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.<>c__DisplayClass285_0.<ExecuteStepImpl>b__0()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
System.InvalidOperationException: An error occurred when trying to create a controller of type 'AVG.Web.Controllers.Pages.StandardPageController'. Make sure that the controller has a parameterless public constructor. ---> System.MissingMethodException: No parameterless constructor defined for this object.
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.Activator.CreateInstance(Type type)
at System.Web.Mvc.DefaultControllerFactory.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType)
--- End of inner exception stack trace ---
at System.Web.Mvc.DefaultControllerFactory.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType)
at System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory)
at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.<>c__DisplayClass285_0.<ExecuteStepImpl>b__0()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
2020-08-13 14:48:27,359 [107] ERROR AVG.Web.EPiServerApplication: No parameterless constructor defined for this object.

 public interface ICmsTrackingService
    {
        Task TrackPage(PageData pageData, HttpContextBase httpContextBase);
    }

public class CmsTrackingService : ICmsTrackingService
    {
        private readonly ITrackingService _trackingService;
        private readonly IContextModeResolver _contextModeResolver;
        private readonly ISiteDefinitionResolver _siteDefinitionResolver;
        private readonly IContentLoader _contentLoader;
        private readonly ILogger _logger = LogManager.GetLogger(typeof(CmsTrackingService));

        public CmsTrackingService(
            ITrackingService trackingService,
            IContextModeResolver contextModeResolver,
            ISiteDefinitionResolver siteDefinitionResolver,
            IContentLoader contentLoader) {
            _trackingService = trackingService;
            _contextModeResolver = contextModeResolver;
            _siteDefinitionResolver = siteDefinitionResolver;
            _contentLoader = contentLoader;
        }
public virtual async Task TrackPage(PageData pageData, HttpContextBase httpContextBase){
...
}
}

context.Services.AddTransient<ICmsTrackingService, CmsTrackingService>();


  public class StandardPageController : PageControllerBase<StandardPage>
    {

        private readonly ICmsTrackingService _cmsTrackingService;
        public StandardPageController(ICmsTrackingService cmsTrackingService)
        {
            _cmsTrackingService = cmsTrackingService;
        }
}
}