重写成员时违反了继承安全规则：'Autofac.Integration.Mvc.AutofacDependencyResolver.GetService（System.Type）'

Question

我有一个项目，我从github拉出来，我正试图在本地工作。我在解决方案中构建了所有项目，一切都很好。但是，当我尝试查看该网站时，我收到运行时错误。事件查看器给了我这条消息：

Exception type: HttpException 
   Exception message: Inheritance security rules violated while overriding member: 'Autofac.Integration.Mvc.AutofacDependencyResolver.GetService(System.Type)'. Security accessibility of the overriding method must match the security accessibility of the method being overridden.
   at System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app)
   at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers)
   at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context)
   at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context)
   at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext)

我不知道如何解决这个问题，我去了它提到的文件Global.asax.cs，但第24行看起来像这样：

ContainerConfig.RegisterContainer();

因此该行与Autofac无关。我不确定我需要改变什么来解决这个问题。