An error occurred during a call to extension function 'getContent'. See InnerException for a complete description of the error.; System.Xml.XmlException: Unexpected XML declaration. The XML declaration must be the first node in the document, and no white space characters are allowed to appear before it. Line 1, position 279.
   at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.ParsePI(StringBuilder piInDtdStringBuilder)
   at System.Xml.XmlTextReaderImpl.ParseElementContent()
   at System.Xml.XmlLoader.LoadNode(Boolean skipOverWhitespace)
   at System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc)
   at System.Xml.XmlDocument.Load(XmlReader reader)
   at System.Xml.XmlDocument.LoadXml(String xml)
   at Pixel.Core.XsltExtension.getChannelContent(String channelName, String name)