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  • Ajay Karwal 31 posts 149 karma points
    Dec 16, 2015 @ 09:10
    Ajay Karwal
    0

    Consistent Server Error on production site.

    I recently put a site into production environment and am regularly getting the following Server Error.

    Can anybody shed some light on what this could be?

    • Umbraco version 7.3.3 assembly: 1.0.5813.17867
    • SEO Checker 1.9.4
    • Hosted on Azure

    Here's the stack trace

    Server Error in '/' Application.
    
    Object reference not set to an instance of an object.
    
    Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
    
    Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
    
    Source Error:
    
    The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:
    
    1. Add a "Debug=true" directive at the top of the file that generated the error. Example:
    
      <%@ Page Language="C#" Debug="true" %>
    
    or:
    
    2) Add the following section to the configuration file of your application:
    
    <configuration>
    
       <system.web>
    
           <compilation debug="true"/>
    
       </system.web>
    
    </configuration>
    
    Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.
    
    Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.
    
    Stack Trace:
    
    [NullReferenceException: Object reference not set to an instance of an object.]
      SEOChecker.Core.Config.Configuration.(String , String ) +98
      SEOChecker.Core.Umbraco.DocumentWrappers.UmbracoDocument.get_SEOConfiguration() +85
      SEOChecker.Core.Extensions.UmbracoDocumentExtensions.RobotsIndexOption(IUmbracoDocument doc, SEOCheckerMetaRobotValues robotDataTypeValues) +35
      SEOChecker.Library.MetaData.get_Robots() +50
      ASP._Page_Views_Master_cshtml.Execute() +2031
      System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +198
      System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +105
      System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +90
      System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +232
      System.Web.WebPages.HelperResult.WriteTo(TextWriter writer) +10
      System.Web.WebPages.WebPageBase.Write(HelperResult result) +80
      System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +63
      System.Web.WebPages.WebPageBase.PopContext() +237
      System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +98
      System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +256
      System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +107
      Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) +113
      System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +291
      System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
      System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +56
      System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +420
      System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +420
      System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +52
      System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +173
      System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +100
      System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
      System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
      System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
      System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +13
      System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
      System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
      System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +36
      System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +12
      System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +22
      System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
      System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +26
      System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
      System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +21
      System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
      System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
      System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +28
      System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
      System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +545
      System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
    
    Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.114.0
    
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