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System.Xml.Xsl.XslTransformException: An error occurred during a call to extension function 'GetProductHeaderInfo'. See InnerException for a complete description of the error. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at EFLanguage.EFCom.Sitecore2010.Funneling.Business.BusinessLogicProvider.SetURLForSiteRoot(Item link, Item siteroot)
   at EFLanguage.EFCom.Sitecore2010.Funneling.xsl.business.XslLogicProvider.GetProductHeaderInfo(String marketCode)
   --- End of inner exception stack trace ---
   at System.Xml.Xsl.Runtime.XmlExtensionFunction.Invoke(Object extObj, Object[] args)
   at System.Xml.Xsl.Runtime.XmlQueryContext.InvokeXsltLateBoundFunction(String name, String namespaceUri, IList`1[] args)
   at programHeader(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
   at Execute(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
   at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter writer)
   at Mvp.Xml.Common.Xsl.MvpXslTransform.TransformToWriter(XmlInput defaultDocument, XsltArgumentList xsltArgs, XmlWriter xmlWriter)
   at Mvp.Xml.Common.Xsl.MvpXslTransform.Transform(XmlInput input, XsltArgumentList arguments, XmlOutput output)
   at Sitecore.Web.UI.WebControls.XslFile.DoRender(HtmlTextWriter output, Item item) Xsl file could not be processed: /2012/_xsl/Common/PageTitleAndTextWithPhone.xslt