System.NullReferenceException: Object reference not set to an instance of an object.
at ASP._Page_app_plugins_degree53_popularlinks_render_output_cshtml.<>c__DisplayClass1_0.<RenderNodeTree>b__0(TextWriter __razor_helper_writer) in C:\home\site\wwwroot\app_plugins\degree53.popularlinks\render\output.cshtml:line 76
at System.Web.WebPages.WebPageBase.Write(HelperResult result)
at ASP._Page_app_plugins_degree53_popularlinks_render_output_cshtml.Execute() in C:\home\site\wwwroot\app_plugins\degree53.popularlinks\render\output.cshtml:line 95
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at Umbraco.Web.Mvc.ProfilingView.Render(ViewContext viewContext, TextWriter writer) in D:\a\1\s\src\Umbraco.Web\Mvc\ProfilingView.cs:line 25
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
at ASP._Page_Views_Partials_grid_editors_Base_cshtml.Execute() in C:\home\site\wwwroot\Views\Partials\grid\editors\Base.cshtml:line 20