Problem with Dependency Injection

[Tabgyn]

I'm trying to add dependency injection to this project with AutoFac.

I made the following changes

Startup.cs

public void Configuration(IAppBuilder app)
{
    var builder = new ContainerBuilder();

    builder.RegisterControllers(typeof(MvcApplication).Assembly);
    builder.RegisterType<ApplicationDbContext>().AsSelf().InstancePerRequest();
    builder.RegisterType<ApplicationUserStore>().As<IUserStore<User, long>>().InstancePerRequest();
    builder.RegisterType<ApplicationUserManager>().AsSelf().InstancePerRequest();
    builder.RegisterType<ApplicationRoleStore>().As<IRoleStore<Role, long>>().InstancePerRequest();
    builder.RegisterType<ApplicationRoleManager>().AsSelf().InstancePerRequest();
    builder.RegisterType<ApplicationGroupStore>().AsSelf().InstancePerRequest();
    builder.RegisterType<ApplicationGroupManager>().AsSelf().InstancePerRequest();
    builder.RegisterType<ApplicationSignInManager>().AsSelf().InstancePerRequest();
    builder.Register(c => HttpContext.Current.GetOwinContext().Authentication).InstancePerRequest();
    builder.Register(c => app.GetDataProtectionProvider()).InstancePerRequest();

    var container = builder.Build();

    DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

    app.UseAutofacMiddleware(container);
    app.UseAutofacMvc();

    ConfigureAuth(app);
}

Startup.Auth.cs

public void ConfigureAuth(IAppBuilder app)
{
    // Configure the db context, user manager and signin manager to use a single instance per request
    //app.CreatePerOwinContext(ApplicationDbContext.Create);
    //app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
    //app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);
    //app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

    ...
}

IdentityConfig.cs

public ApplicationUserManager(IUserStore<User, long> store, IDataProtectionProvider dataProtectionProvider)
            : base(store)
{
    UserValidator = new UserValidator<User, long>(this)
    {
        AllowOnlyAlphanumericUserNames = false,
        RequireUniqueEmail = true
    };

    PasswordValidator = new PasswordValidator
    {
        RequiredLength = 6,
        RequireNonLetterOrDigit = true,
        RequireDigit = true,
        RequireLowercase = true,
        RequireUppercase = true,
    };

    UserLockoutEnabledByDefault = true;
    DefaultAccountLockoutTimeSpan = TimeSpan.FromMinutes(5);
    MaxFailedAccessAttemptsBeforeLockout = 5;
    EmailService = new EmailService();
    UserTokenProvider = new DataProtectorTokenProvider<User, long>(dataProtectionProvider.Create("ASP.NET Identity"));
}

The problem is that in the ApplicationGroupManager constructor HttpContext.Current.GetOwinContext (). Get <ApplicationDbContext> () returns null

public ApplicationGroupManager()
{
    _db = HttpContext.Current.GetOwinContext().Get<ApplicationDbContext>();
    _userManager = HttpContext.Current.GetOwinContext().GetUserManager<ApplicationUserManager>();
    _roleManager = HttpContext.Current.GetOwinContext().Get<ApplicationRoleManager>();
    _groupStore = new ApplicationGroupStore(_db);
}

Would anyone know how to solve this?