Error

The given key was not present in the dictionary.
   at System.ThrowHelper.ThrowKeyNotFoundException()
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at Volvo.CWP.SharePoint.SPListItemBase.get_Item(String name)
   at Volvo.CWP.SharePoint.Applications.Internet.Context.InternetConnectedProvider.GetCombinedListItem(ISPListItem currentItem, ISPListItem sourceItem)
   at Volvo.CWP.SharePoint.Applications.Internet.Context.InternetContext.get_ListItem()
   at Volvo.CWP.SharePoint.Applications.Internet.Context.InternetContext.InternetFieldControlHost`1.DetermineControlMode(ICWPContext context, ICwpFieldControl`1 control)
   at Volvo.CWP.SharePoint.FieldControls.CwpFieldControlHostBase`1.Registering(ICwpFieldControl`1 fieldControl)
   at Volvo.CWP.SharePoint.FieldControls.CwpFieldControlHostBase`1.Register(ICwpFieldControl`1 fieldControl)
   at Volvo.CWP.SharePoint.FieldControls.CWPBaseFieldControl`1.OnInit(EventArgs e)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Control.InitRecursive(Control namingContainer)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)