Server Error in '/' Application.

Cannot implicitly convert type 'Umbraco.Core.Dynamics.DynamicNull' to 'Umbraco.Core.Models.IPublishedContent'. An explicit conversion exists (are you missing a cast?)

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: Cannot implicitly convert type 'Umbraco.Core.Dynamics.DynamicNull' to 'Umbraco.Core.Models.IPublishedContent'. An explicit conversion exists (are you missing a cast?)

Source Error:


Line 8:      IPublishedContent thisPage = null;
Line 9:      string UrlName = Request.Url.AbsolutePath.Split('/')[Request.Url.AbsolutePath.Split('/').Length - 3].ToLower();
Line 10:     IPublishedContent WhatsOnRootPage = Umbraco.Content(System.Configuration.ConfigurationManager.AppSettings.Get("CoursesRootPage"));
Line 11:     if (WhatsOnRootPage.Url.Split('/')[WhatsOnRootPage.Url.Split('/').Length - 2].ToLower() == UrlName)
Line 12:     {

Source File: d:\Websites\staging.priory.21stcd.co.uk\Views\Partials\_RefineCategoryBar-Courses.cshtml    Line: 10

Stack Trace:


[RuntimeBinderException: Cannot implicitly convert type 'Umbraco.Core.Dynamics.DynamicNull' to 'Umbraco.Core.Models.IPublishedContent'. An explicit conversion exists (are you missing a cast?)]
   CallSite.Target(Closure , CallSite , Object ) +171
   System.Dynamic.UpdateDelegates.UpdateAndExecute1(CallSite site, T0 arg0) +615
   ASP._Page_Views_Partials__RefineCategoryBar_Courses_cshtml.Execute() in d:\Websites\staging.priory.21stcd.co.uk\Views\Partials\_RefineCategoryBar-Courses.cshtml:10
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +163
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122
   Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +194
   System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) +136
   ASP._Page_Views_TwentyFirstCD_Event_cshtml.Execute() in d:\Websites\staging.priory.21stcd.co.uk\Views\TwentyFirstCD\Event.cshtml:135
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +163
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +107
   Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +194
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +375
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +88
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +775
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +775
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +188
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +43
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +602
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +128


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4063.0