Mengkonsumsi Sylius API melalui iOS

Saat ini saya mencoba menggunakan sylius api menggunakan domain demo.sylius.com, saya telah mengautentikasi dengan benar dan mendapatkan token akses tanpa masalah tetapi ketika harus meneruskan token akses ke header otorisasi saya mengalami masalah dengan respon { error = "access_denied"; "error_description" = "OAuth2 authentication required"; } meskipun api berfungsi dengan baik melalui tukang pos, ini contoh kode saya

func getTotalProducts(page:String, completionHandler: @escaping (_ totalProducts: TotalProducts) -> Void){
    let urlPath=APIManager.baseURL+"api/v2/products"
    let headers = ["Content-Type":"application/json","Authorization":"Bearer \(token)","X-Authorization":"Bearer SampleToken","Auth":"Bearer SampleToken","auth":"Bearer SampleToken"]
    var request = URLRequest(url:  NSURL(string: urlPath)! as URL)

    // Your request method type Get or post etc according to your requirement
    request.httpMethod = "GET"

    request.setValue("Bearer SampleToken", forHTTPHeaderField: "Authorization")
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    request.setValue("Bearer SampleToken", forHTTPHeaderField: "X-Authorization")
    request.setValue("Bearer SampleToken", forHTTPHeaderField: "auth")

    Alamofire.request(request)
        .responseJSON { response in
            switch(response.result){
            case .success(let value):
                print(value)
                let totalProducts = Mapper<TotalProducts>().map(JSON: value as! [String : Any])!
                completionHandler(totalProducts)
                break
            case .failure(let error):
                print("something went wrong \(error.localizedDescription)")
                break
            }
        }.session.finishTasksAndInvalidate()
}