An error occurred during a call to extension function 'getChannel'. See InnerException for a complete description of the error.; System.NullReferenceException: Object reference not set to an instance of an object.
   at Pixel.Cms.Pages.ChannelContent.get_Url()
   at Pixel.Cms.Pages.ChannelContent.GetXml(XmlWriter xtw, Boolean isOnline, Boolean isHidden, Boolean omitContents)
   at Pixel.Cms.Pages.Channel.GetChannelIndex(String rootNodeName, Int32 limit, Int32 offset, String tag, ChannelIndexMode mode, String injectExternalData)
   at Pixel.Core.XsltExtension.getChannel(String name, String mode, String tag)
   at Pixel.Core.XsltExtension.getChannel(String name)