Hi, I’m facing this intermittent issue that Umbraco 7 suddenly crashes and throws NullRefrenceException on RenderViewResultAsString method. This error got resolved when I redeploy the site or install an empty Umbraco Package.
My deployment is on Azure stack trace below, has anyone faced similar issue? :
System.NullReferenceException: Object reference not set to an instance of an object.
at Umbraco.Web.Mvc.ControllerExtensions.RenderViewResultAsString(ControllerBase controller, ViewResultBase viewResult)
at Umbraco.Web.Macros.PartialViewMacroEngine.Execute(MacroModel macro, IPublishedContent content)
at Umbraco.Web.Macros.PartialViewMacroEngine.Execute(MacroModel macro, INode node)
at umbraco.macro.LoadPartialViewMacro(MacroModel macro)
at umbraco.macro.renderMacro(Hashtable pageElements, Int32 pageId)
at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(macro m, IDictionary2 parameters, page umbracoPage) at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(String alias, IDictionary2 parameters, page umbracoPage)
at Umbraco.Web.UmbracoComponentRenderer.RenderMacro(String alias, IDictionary2 parameters) at Umbraco.Web.UmbracoHelper.RenderMacro(String alias, IDictionary2 parameters)
at ASP._Page_Views_Partials_grid_editors_macro_cshtml.Execute() in D:\home\site\wwwroot\Views\Partials\grid\editors\macro.cshtml:line 15
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 System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model)
at ASP._Page_Views_Partials_grid_editors_base_cshtml.Execute() in D:\home\site\wwwroot\Views\Partials\grid\editors\base.cshtml:line 20
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 System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model)
at ASP._Page_Views_Partials_Grid_bootstrap3_cshtml.<>c__DisplayClass0_0.b__0(TextWriter __razor_helper_writer) in D:\home\site\wwwroot\Views\Partials\Grid\bootstrap3.cshtml:line 46
at System.Web.WebPages.HelperResult.WriteTo(TextWriter writer)
at System.Web.WebPages.WebPageBase.Write(HelperResult result)
at CallSite.Target(Closure , CallSite , _Page_Views_Partials_Grid_bootstrap3_cshtml , Object )
at ASP._Page_Views_Partials_Grid_bootstrap3_cshtml.Execute() in D:\home\site\wwwroot\Views\Partials\Grid\bootstrap3.cshtml:line 15
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 System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection)
at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
at Umbraco.Web.GridTemplateExtensions.GetGridHtml(HtmlHelper html, IPublishedContent contentItem, String propertyAlias, String framework)
at Umbraco.Web.GridTemplateExtensions.GetGridHtml(HtmlHelper html, IPublishedContent contentItem, String propertyAlias)
at ASP._Page_Views_amcsPublicPageTabs_cshtml.Execute() in D:\home\site\wwwroot\Views\amcsPublicPageTabs.cshtml:line 35
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
at System.Web.WebPages.StartPage.RunPage()
at System.Web.WebPages.StartPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer)
at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList1 filters, ActionResult actionResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.b__1c()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.b__1e(IAsyncResult asyncResult)
This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/107908-systemnullreferenceexception-at-umbracowebmvccontrollerextensionsrenderviewresultasstring