mobile-buy-sdk-android失败，出现错误com.shopify.buy3.GraphHttpError

Question

下面是代码和错误消息

错误信息：

“错误com.shopify.buy3.GraphHttpError：HTTP 403 Forbidden”

403错误表示我没有正确验证请求，我在这里做错了什么？代码

 OkHttpClient httpClient = new OkHttpClient.Builder()
            .addNetworkInterceptor(new HttpLoggingInterceptor())
            .build();
 GraphClient gl =  GraphClient.builder(this)
            .shopDomain("<shop name>.myshopify.com")
            .accessToken("myAPIKey")
            .httpClient(httpClient)
            .httpCache(new File(getApplicationContext().getCacheDir(), "/http"), 10 * 1024 * 1024) 
            .defaultHttpCachePolicy(HttpCachePolicy.CACHE_FIRST.expireAfter(5, TimeUnit.MINUTES)) // cached response valid by default for 5 minutes
            .build();

Storefront.QueryRootQuery query = Storefront.query(new Storefront.QueryRootQueryDefinition() {
        @Override public void define(final Storefront.QueryRootQuery rootQueryBuilder) {
            rootQueryBuilder.shop(new Storefront.ShopQueryDefinition() {
                @Override public void define(final Storefront.ShopQuery shopQueryBuilder) {
                    shopQueryBuilder.privacyPolicy(new Storefront.ShopPolicyQueryDefinition() {
                        @Override
                        public void define(final Storefront.ShopPolicyQuery policyQueryBuilder) {
                            policyQueryBuilder.body();
                            policyQueryBuilder.url();
                            policyQueryBuilder.title();
                        }
                    });

                }
            });
        }
    });

 QueryGraphCall call = cl.queryGraph(query);

    call.enqueue(new GraphCall.Callback<Storefront.QueryRoot>() {
        @Override
        public void onResponse(@NonNull GraphResponse<Storefront.QueryRoot> response) {
            String body = response.data().getShop().getPrivacyPolicy().getBody();
            Log.v(TAG,"boby : " + body);

        }

        @Override
        public void onFailure(@NonNull GraphError error) {
            Log.v(TAG,"error " + error.toString());
        }
    });