[InvalidOperationException: Sequence contains no elements]
System.Linq.Enumerable.First(IEnumerable`1 source) +335
LiquidCMS.web.promozioni.handleRequest() in C:\inetpub\wwwroot\Liquid_Migross_aws\web\promozioni.aspx.cs:68
LiquidCMS.web.promozioni.Page_Load(Object sender, EventArgs e) in C:\inetpub\wwwroot\Liquid_Migross_aws\web\promozioni.aspx.cs:30
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
System.Web.UI.Control.OnLoad(EventArgs e) +97
System.Web.UI.Control.LoadRecursive() +61
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693
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