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 16:         Dim xeEvents As XElement = XElement.Load(strRssPath)
Line 17:         Dim Items = xeEvents...<item>
Line 18:         Dim qryDetail = (From item In Items Where item.<guid>.Value = intGuid Select item).Single
Line 19:         Dim qryDates = From item In Items Where item.<guid>.Value <> intGuid And item.<title>.Value = qryDetail.<title>.Value Select item
Line 20: 

Source File: G:\PleskVhosts\cavanweb.ie\cavanweb\App_Controls\events\portfolio\Detail.ascx.vb    Line: 18

Stack Trace:


[InvalidOperationException: Sequence contains no elements]
   System.Linq.Enumerable.Single(IEnumerable`1 source) +317
   App_Controls_events_portfolio_Detail.Page_Load(Object sender, EventArgs e) in G:\PleskVhosts\cavanweb.ie\cavanweb\App_Controls\events\portfolio\Detail.ascx.vb:18
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0