System.Web.PipelineModuleStepContainer.GetEventCount 에서 NullReferenceException 이 발생한다면?

참고로, HTTP 상태 코드는 500 을 반환하는데요. 웹 브라우저로 방문한 경우에는 단순하게 다음과 같이 예외가 발생합니다.

Server Error in '/' Application.
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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: 

 An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Stack Trace: 

[NullReferenceException: Object reference not set to an instance of an object.]
   System.Web.PipelineModuleStepContainer.GetEventCount(RequestNotification notification, Boolean isPostEvent) +30
   System.Web.PipelineStepManager.ResumeSteps(Exception error) +1503
   System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) +133
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +597

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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18033  

NullReferenceException on PipelineModuleStepContainer after deploying
; https://github.com/Glimpse/Glimpse/issues/174

public class Global : System.Web.HttpApplication
{
    void Application_Start(object sender, EventArgs e)
    {
        this.BeginRequest += new EventHandler(Global_BeginRequest);
    }

    void Global_BeginRequest(object sender, EventArgs e)
    {
    }

    // ... [생략] ...
}

public class Global : System.Web.HttpApplication
{
    void Application_Start(object sender, EventArgs e)
    {
    }

    void Application_BeginRequest(object sender, EventArgs e)
    {
    }
    
    // ... [생략] ...
}