Autofac - 无法创建请求生命周期范围，因为 HttpContext 不可用 - 由于异步代码

Autofac - 无法创建请求生命周期范围，因为 HttpContext 不可用 - 由于异步代码？

csharp
public class UserController : ApiController
{
    private readonly IUserService _userService;
    public UserController(IUserService userService)
    {
        _userService = userService;
    }
    [HttpPost]
    public async Task CreateUser(UserModel userModel)
    {
        await _userService.CreateUserAsync(userModel);
        return Ok();
    }
}
public interface IUserService
{
    Task CreateUserAsync(UserModel userModel);
}
public class UserService : IUserService
{
    private readonly HttpContext _httpContext;
    public UserService(HttpContext httpContext)
    {
        _httpContext = httpContext;
    }
    public async Task CreateUserAsync(UserModel userModel)
    {
        // 在此处使用 HttpContext 对象
        // ...
    }
}

csharp
public class AutofacModule : Module
{
    protected override void Load(ContainerBuilder builder)
    {
        builder.RegisterType().As().InstancePerRequest();
        // 其他服务的注册
        // ...
    }
}

csharp
public class UserController : ApiController
{
    private readonly IUserService _userService;
    public UserController(IUserService userService)
    {
        _userService = userService;
    }
    [HttpPost]
    public async Task CreateUser(UserModel userModel)
    {
        using (var scope = AutofacModule.Container.BeginLifetimeScope())
        {
            var userService = scope.Resolve();
            await userService.CreateUserAsync(userModel);
        }
        return Ok();
    }
}