Server Error in '/' Application.

Sequence contains no elements

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.InvalidOperationException: Sequence contains no elements

Source Error:


Line 38: continue; Line 39: } Line 40: var modelLink = internalLinks.Where(link => link.ContentPageLink.Single().Id == Model.Content.Id); Line 41: if (modelLink != null && modelLink.Count() > 0) Line 42: {

Source File: C:\home\site\wwwroot\Views\Partials\Navigation\ContentPageNavigation .cshtml    Line: 40

Stack Trace:


[InvalidOperationException: Sequence contains no elements] System.Linq.Enumerable.Single(IEnumerable`1 source) +551 ASP._Page_Views_Partials_Navigation_ContentPageNavigation__cshtml.<getModelSubMenuIndex>b__0_0(InternalLink link) in C:\home\site\wwwroot\Views\Partials\Navigation\ContentPageNavigation .cshtml:40 System.Linq.WhereEnumerableIterator`1.MoveNext() +205 System.Linq.Enumerable.Count(IEnumerable`1 source) +266 ASP._Page_Views_Partials_Navigation_ContentPageNavigation__cshtml.getModelSubMenuIndex(IEnumerable`1 subMenus) in C:\home\site\wwwroot\Views\Partials\Navigation\ContentPageNavigation .cshtml:41 ASP._Page_Views_Partials_Navigation_ContentPageNavigation__cshtml.Execute() in C:\home\site\wwwroot\Views\Partials\Navigation\ContentPageNavigation .cshtml:12 System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252 System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +148 System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122 Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +200 System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) +136 ASP._Page_Views_ContentPage_cshtml.Execute() in C:\home\site\wwwroot\Views\ContentPage.cshtml:29 System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252 System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +148 System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +107 Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +200 System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +378 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +91 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +795 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +795 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +795 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81 System.Web.Mvc.Async.<>c__DisplayClass3_1.<BeginInvokeAction>b__5(IAsyncResult asyncResult) +188 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38 System.Web.Mvc.<>c.<BeginExecuteCore>b__152_1(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.<>c.<BeginProcessRequest>b__20_1(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() +651 System.Web.<>c__DisplayClass285_0.<ExecuteStepImpl>b__0() +40 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +155 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +134


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0