Server Error in '/' Application.

Object reference not set to an instance of an object.

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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 71:             productDocument = Session.Item("productDocument")
Line 72:         End If
Line 73:         Dim totalVariants = (From el In productDocument.Descendants("variant")).Count
Line 74:         If totalVariants = 0 Then
Line 75:             Session.Remove("selectedConfigurationElement")

Source File: D:\home\sportlife23.it\httpdocs\product.aspx.vb    Line: 73

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   product.product_Load(Object sender, EventArgs e) in D:\home\sportlife23.it\httpdocs\product.aspx.vb:73
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


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