[InvalidOperationException: Sequence contains no elements]
System.Linq.Enumerable.Single(IEnumerable`1 source) +306
CmsData.ReadItemNode(XElement rootNode, String tagName, String id) in c:\Sites\mimsites\mechanismsinmedicine1\App_Code\Lcms\CmsData\CmsData.cs:748
CmsData.readItem(XElement rootNode, String tagName, String id) in c:\Sites\mimsites\mechanismsinmedicine1\App_Code\Lcms\CmsData\CmsData.cs:732
CmsData.ReadItem(String fileName, String tagName, String id) in c:\Sites\mimsites\mechanismsinmedicine1\App_Code\Lcms\CmsData\CmsData.cs:704
ASP._Page_site_view_cshtml.Execute() in c:\Sites\mimsites\mechanismsinmedicine1\site\view.cshtml:56
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors) +99
System.Web.WebPages.WebPage.ExecutePageHierarchy() +182
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +107
System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContextBase httpContext) +142
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