checkoutCreate response is null.

[Networld301]

Hi, I am new to Shopify and I am developing an android app using Shopify storefront , I integrated the checkoutCreate SDK but the response is always null. Below is my code

        ArrayList<Storefront.CheckoutLineItemInput> arrCheckout = new ArrayList<>();
        for (int i = 0; i < shops.size(); i++) {
            int quantity = Integer.parseInt(shops.get(i).getQty());
            String VariantID = shops.get(i).getPrdid();
            String Variant = ("gid://shopify/ProductVariant/" + VariantID);
            byte[] data = new byte[0];
            try {
                data = Variant.getBytes("UTF-8");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            String VariantID64 = Base64.encodeToString(data, Base64.DEFAULT);

            Storefront.CheckoutLineItemInput item = new Storefront.CheckoutLineItemInput(quantity, new ID(VariantID64));
            arrCheckout.add(item);

        }

        Storefront.CheckoutCreateInput input = new Storefront.CheckoutCreateInput()
                .setLineItemsInput(Input.value(arrCheckout));

        Storefront.MutationQuery query = Storefront.mutation(mutationQuery -> mutationQuery
                .checkoutCreate(input, createPayloadQuery -> createPayloadQuery
                        .checkout(checkoutQuery -> checkoutQuery
                                .webUrl()
                                .totalPrice()
                                .subtotalPrice()

                        )
                        .userErrors(userErrorQuery -> userErrorQuery
                                .field()
                                .message()
                        )
                )
        );

        graphClient.mutateGraph(query).enqueue(new GraphCall.Callback<Storefront.Mutation>() {
            @Override
            public void onResponse(@NonNull GraphResponse<Storefront.Mutation> response) {
                if (response.data()==null) {
                    Log.e("response, "checkout null");
                } else {
                    String checkoutId = response.data().getCheckoutCreate().getCheckout().getId().toString();
                    String checkoutWebUrl = response.data().getCheckoutCreate().getCheckout().getWebUrl();
                }
            }

            @Override
            public void onFailure(@NonNull GraphError error) {
                // handle errorscheckoutWebUrl
                Log.e("error",  error.getMessage().toString());
            }
        });

[rebeccajfriedman]

Are you still experiencing this issue?

[rebeccajfriedman]

Closing this issue due to inactivity.

[fabritronixdesignlabs]

Still i am facing same issue

[PeOS-China]

Still i am facing same issue, My shop is test mode