System.NullReferenceException at Glass.Mapper.Sc.Web.RequestContext.GetRootItem

[VigneshJothikumar]

Hi, I am using Glass mapper version 5.5.28 in Sitecore 9.2 Version I am getting below error in azure hosted environment can you please help on this.

assembly : Glass.Mapper.Sc, Version=5.5.28.0, Culture=neutral, PublicKeyToken=null method : Glass.Mapper.Sc.Web.RequestContext.GetRootItem outerType : System.Web.HttpUnhandledException details :[{"parsedStack":[{"assembly":"Sitecore.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Mvc.Pipelines.MvcEvents.Exception.ShowAspNetErrorMessage.ShowErrorMessage","level":0,"line":0},{"assembly":"Sitecore.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Mvc.Pipelines.MvcEvents.Exception.ShowAspNetErrorMessage.Process","level":1,"line":0},{"assembly":"Sitecore.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null","method":"n/a","level":2,"line":0},{"assembly":"Sitecore.Kernel, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Pipelines.CorePipeline.Run","level":3,"line":0},{"assembly":"Sitecore.Kernel, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Pipelines.DefaultCorePipelineManager.Run","level":4,"line":0},{"assembly":"Sitecore.Kernel, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Pipelines.DefaultCorePipelineManager.Run","level":5,"line":0},{"assembly":"Sitecore.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Mvc.Pipelines.PipelineService.RunPipeline","level":6,"line":0},{"assembly":"Sitecore.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Mvc.Filters.PipelineBasedRequestFilter.OnException","level":7,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters","level":8,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass3_1.<BeginInvokeAction>b__5","level":9,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction","level":10,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Controller+<>c.<BeginExecuteCore>b__152_1","level":11,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncVoid1.CallEndDelegate","level":12,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Controller.EndExecuteCore","level":13,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncVoid1.CallEndDelegate","level":14,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Controller.EndExecute","level":15,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.MvcHandler+<>c.<BeginProcessRequest>b__20_1","level":16,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncVoid`1.CallEndDelegate","level":17,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.MvcHandler.EndProcessRequest","level":18,"line":0},{"assembly":"Sitecore.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Mvc.Routing.RouteHttpHandler.EndProcessRequest","level":19,"line":0},{"assembly":"System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a","method":"System.Web.HttpApplication+CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute","level":20,"line":0},{"assembly":"System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a","method":"System.Web.HttpApplication.ExecuteStepImpl","level":21,"line":0},{"assembly":"System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a","method":"System.Web.HttpApplication.ExecuteStep","level":22,"line":0}],"severityLevel":"Critical","outerId":"0","message":"An unhandled exception occurred.","type":"System.Web.HttpUnhandledException","id":"37238760"},{"parsedStack":[{"assembly":"Glass.Mapper.Sc, Version=5.5.28.0, Culture=neutral, PublicKeyToken=null","method":"Glass.Mapper.Sc.Web.RequestContext.GetRootItem","level":0,"line":0},{"assembly":"Aceto.Foundation.ErrorHandlers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Aceto.Foundation.ErrorHandlers.Pipelines.MvcException.ExceptionWrappedExecuteRenderer.GetRenderingErrorModel","level":1,"line":0},{"assembly":"Aceto.Foundation.ErrorHandlers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Aceto.Foundation.ErrorHandlers.Pipelines.MvcException.ExceptionWrappedExecuteRenderer.RenderError","level":2,"line":0},{"assembly":"Aceto.Foundation.ErrorHandlers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Aceto.Foundation.ErrorHandlers.Pipelines.MvcException.ExceptionWrappedExecuteRenderer.Process","level":3,"line":0},{"assembly":"Aceto.Foundation.ErrorHandlers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null","method":"n/a","level":4,"line":0},{"assembly":"Sitecore.Kernel, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Pipelines.CorePipeline.Run","level":5,"line":0},{"assembly":"Sitecore.Kernel, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Pipelines.DefaultCorePipelineManager.Run","level":6,"line":0},{"assembly":"Sitecore.Kernel, Version=13.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Pipelines.DefaultCorePipelineManager.Run","level":7,"line":0},{"assembly":"Sitecore.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Mvc.Pipelines.PipelineService.RunPipeline","level":8,"line":0},{"assembly":"Sitecore.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null","method":"Sitecore.Mvc.Presentation.RenderingView.Render","level":9,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.ViewResultBase.ExecuteResult","level":10,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive","level":11,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive","level":12,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive","level":13,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters","level":14,"line":0},{"assembly":"System.Web.Mvc, Version=5.2.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35","method":"System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass3_1.<BeginInvokeAction>b__5","level":15,"line":0}],"severityLevel":"Critical","outerId":"37238760","message":"Object reference not set to an instance of an object.","type":"System.NullReferenceException","id":"1686768"}]

[mikeedwards83]

Hi, can you format this any better? it is very hard to read the stack trace. Also the first place to start would be by checking the lifestyle of your DI container registrations for the Glass services.

[VigneshJothikumar]

Hi Mike,

This is how we are registered in the DI container, please have look and let me know you want more information.

public void Configure(IServiceCollection serviceCollection) { serviceCollection.AddTransient<ISitecoreService>(provider => new SitecoreService(Sitecore.Context.Database)); serviceCollection.AddScoped<IRequestContext, RequestContext>(); serviceCollection.AddScoped<IMvcContext, MvcContext>(); serviceCollection.AddScoped<IGlassHtml, GlassHtml>(); }

Thanks, Vignesh Jothikumar

[VigneshJothikumar]

Hi Mike

After a couple of research, I just predicated this issue source "System.NullReferenceException at Glass.Mapper.Sc.Web.RequestContext.GetRootItem" might "System.Web.HttpUnhandledException" because I see the HTTP unhandled exception but I couldn't any solution for this. Can you please help me with this.

Thanks and Regards, Vignesh Jothikumar

[mikeedwards83]

If you need immediate help then I can offer consultancy. Email me at [email protected] and I can give you rates and terms.