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:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   KGGWebpart.FrontEnd.TinChuyenMuc.TinChuyenMuc.__Render__control1(HtmlTextWriter __w, Control parameterContainer) +453
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +116
   System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +13
   System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +49
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +131
   Microsoft.SharePoint.WebPartPages.SPChrome.RenderPartContents(HtmlTextWriter output, WebPart part) +36

[WebPartException: Object reference not set to an instance of an object.]
   Microsoft.SharePoint.WebPartPages.SPChrome.RenderPartContents(HtmlTextWriter output, WebPart part) +152
   Microsoft.SharePoint.WebPartPages.SPChrome.RenderWebPart(HtmlTextWriter output, WebPart part) +58
   Microsoft.SharePoint.WebPartPages.WebPartZone.RenderZoneCell(HtmlTextWriter output, Boolean bMoreParts, WebPart part) +2058
   Microsoft.SharePoint.WebPartPages.WebPartZone.RenderWebParts(HtmlTextWriter output, ArrayList webParts) +620
   Microsoft.SharePoint.WebPartPages.WebPartZone.Render(HtmlTextWriter output) +1139
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +289
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +289
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +47
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +289
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +208
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +47
   Microsoft.SharePoint.WebControls.SharePointForm.Render(HtmlTextWriter output) +924
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +69
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +289
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +47
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +289
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +289
   Microsoft.SharePoint.Publishing.PublishingCachablePage.RenderChildren(HtmlTextWriter writer) +56
   System.Web.UI.Page.Render(HtmlTextWriter writer) +39
   Microsoft.SharePoint.WebControls.DeltaPage.RenderToBase(HtmlTextWriter writer) +906
   Microsoft.SharePoint.WebControls.DeltaPage.Render(HtmlTextWriter writer) +81
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +9094


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0