Naknade za usluge platnog prometa

System.NullReferenceException: Object reference not set to an instance of an object.
   at Umbraco.Web.GridTemplateExtensions.GetGridHtml(IPublishedContent contentItem, String propertyAlias, String framework)
   at ASP._Page_app_plugins_widgetpicker_widgetpicker_editor_cshtml.Execute() in c:\inetpub\wwwroot\App_Plugins\WidgetPicker\widgetPicker.editor.cshtml:line 9
   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.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
   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:\inetpub\wwwroot\Views\Partials\Grid\Editors\Base.cshtml:line 20

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