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![System.Xml.Xsl.XslTransformException: An error occurred during a call to extension function 'GetHomeItem'. See InnerException for a complete description of the error. ---> System.ArgumentNullException: Value cannot be null.
Parameter name: item
at Sitecore.Diagnostics.Assert.Throw(Exception e)
at Sitecore.Diagnostics.Assert.ArgumentNotNull(Object argument, String argumentName)
at Sitecore.Xml.XPath.ItemNavigator.Initialize(Item item)
at Sitecore.Configuration.Factory.CreateItemNavigator(Item item)
at Sq.Nederman.Internet.Xsl.XslHelper.GetHomeItem()
--- 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 Path(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, XmlSequenceWriter results)
at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter writer, Boolean closeWriter)
at System.Xml.Xsl.XmlILCommand.Execute(IXPathNavigable contextDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter results)
at System.Xml.Xsl.XslCompiledTransform.Transform(IXPathNavigable input, XsltArgumentList arguments, XmlWriter results)
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)](/sitecore/shell/themes/standard/applications/16x16/warning.png)