Server Error in '/' Application.

The value "Umbraco.Web.PublishedModels.NavigationBlock" is not of type "Umbraco.Web.PublishedModels.Event" and cannot be used in this generic collection.
Parameter name: value

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: System.ArgumentException: The value "Umbraco.Web.PublishedModels.NavigationBlock" is not of type "Umbraco.Web.PublishedModels.Event" and cannot be used in this generic collection.
Parameter name: value

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[ArgumentException: The value "Umbraco.Web.PublishedModels.NavigationBlock" is not of type "Umbraco.Web.PublishedModels.Event" and cannot be used in this generic collection.
Parameter name: value]
   System.ThrowHelper.ThrowWrongValueTypeArgumentException(Object value, Type targetType) +133
   System.Collections.Generic.List`1.System.Collections.IList.Add(Object item) +193
   Umbraco.Web.PropertyEditors.ValueConverters.NestedContentManyValueConverter.ConvertIntermediateToObject(IPublishedElement owner, IPublishedPropertyType propertyType, PropertyCacheLevel referenceCacheLevel, Object inter, Boolean preview) in d:\a\1\s\src\Umbraco.Web\PropertyEditors\ValueConverters\NestedContentManyValueConverter.cs:70
   Umbraco.Core.Models.PublishedContent.PublishedPropertyType.ConvertInterToObject(IPublishedElement owner, PropertyCacheLevel referenceCacheLevel, Object inter, Boolean preview) in d:\a\1\s\src\Umbraco.Core\Models\PublishedContent\PublishedPropertyType.cs:219
   Umbraco.Web.PublishedCache.NuCache.Property.GetValue(String culture, String segment) in d:\a\1\s\src\Umbraco.Web\PublishedCache\NuCache\Property.cs:211
   Umbraco.Web.PublishedPropertyExtension.Value(IPublishedProperty property, String culture, String segment, Fallback fallback, T defaultValue) in d:\a\1\s\src\Umbraco.Web\PublishedPropertyExtension.cs:39
   Umbraco.Web.PublishedContentExtensions.Value(IPublishedContent content, String alias, String culture, String segment, Fallback fallback, T defaultValue) in d:\a\1\s\src\Umbraco.Web\PublishedContentExtensions.cs:163
   Equites.Controllers.SiteMapPageController.Index(ContentModel model) in D:\a\1\s\Equites.Controllers\SiteMapPageController.cs:47
   lambda_method(Closure , ControllerBase , Object[] ) +142
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35
   System.Web.Mvc.Async.<>c.<BeginInvokeSynchronousActionMethod>b__9_0(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +39
   System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +70
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.<>c__DisplayClass11_0.<InvokeActionMethodFilterAsynchronouslyRecursive>b__0() +80
   System.Web.Mvc.Async.<>c__DisplayClass11_2.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2() +387
   System.Web.Mvc.Async.<>c__DisplayClass11_2.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2() +387
   System.Web.Mvc.Async.<>c__DisplayClass11_2.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2() +387
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.<>c__DisplayClass3_6.<BeginInvokeAction>b__4() +50
   System.Web.Mvc.Async.<>c__DisplayClass3_1.<BeginInvokeAction>b__1(IAsyncResult asyncResult) +188
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
   System.Web.Mvc.<>c.<BeginExecuteCore>b__152_1(IAsyncResult asyncResult, ExecuteCoreState innerState) +26
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +68
   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.<>c.<BeginProcessRequest>b__20_1(IAsyncResult asyncResult, ProcessRequestState innerState) +40
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +68
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +648
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +213
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +131


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3429.0