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) at Pixel.Cms.Pages.Channel.GetChannelIndex(String rootNodeName, Int32 limit, Int32 offset, String tag, ChannelIndexMode mode) at Pixel.Cms.Pages.Channel.GetChannelIndex(ChannelIndexMode mode) at Pixel.Core.XsltExtension.getChannel(String name, String mode) at Pixel.Core.XsltExtension.getChannel(String name)