Cannot find Autofac container

Global.asax

<%@ Assembly Name="Microsoft.SharePoint"%>
<%@ Assembly Name="Autofac.Integration.Web, Version=2.6.1.841, Culture=neutral, PublicKeyToken=17863af14b0044da"%>
<%@ Import Namespace="Autofac.Integration.Web"  %>
<%@ Application Language="C#" Inherits="AutofacContainerProvider.SHttpApplication, AssemblyName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=3c6f45e89aad3c3a" %>