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 19: 
Line 20:         If Not IsPostBack Then
Line 21:             PreviousPageURL.PostBackUrl = Request.UrlReferrer.AbsoluteUri
Line 22:         End If
Line 23: 

Source File: G:\PleskVhosts\spieltek.com\fieldguidetomodeling\Help\Contact-Field-Guide-To.aspx.vb    Line: 21

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   ContactFieldGuideTo.Page_Load(Object sender, EventArgs e) in G:\PleskVhosts\spieltek.com\fieldguidetomodeling\Help\Contact-Field-Guide-To.aspx.vb:21
   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