Вылетает android billing (Could not execute method for android:onClick)

2021-01-22 22:39:11.330 22210-22210/shop.test_billing_v3 D/AndroidRuntime: Shutting down VM
2021-01-22 22:39:11.339 22210-22210/shop.test_billing_v3 E/AndroidRuntime: FATAL EXCEPTION: main
    Process: shop.test_billing_v3, PID: 22210
    java.lang.IllegalStateException: Could not execute method for android:onClick
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:414)
        at android.view.View.performClick(View.java:6599)
        at android.view.View.performClickInternal(View.java:6576)
        at android.view.View.access$3100(View.java:780)
        at android.view.View$PerformClick.run(View.java:25926)
        at android.os.Handler.handleCallback(Handler.java:873)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6718)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Method.invoke(Native Method)
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409)
        at android.view.View.performClick(View.java:6599) 
        at android.view.View.performClickInternal(View.java:6576) 
        at android.view.View.access$3100(View.java:780) 
        at android.view.View$PerformClick.run(View.java:25926) 
        at android.os.Handler.handleCallback(Handler.java:873) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:193) 
        at android.app.ActivityThread.main(ActivityThread.java:6718) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 
     Caused by: java.lang.IllegalArgumentException: SKU cannot be null.
        at com.android.billingclient.api.BillingFlowParams$Builder.build(com.android.billingclient:billing@@3.0.2:4)
        at shop.test_billing_v3.MainActivity.one(MainActivity.java:87)
        at java.lang.reflect.Method.invoke(Native Method) 
        at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409) 
        at android.view.View.performClick(View.java:6599) 
        at android.view.View.performClickInternal(View.java:6576) 
        at android.view.View.access$3100(View.java:780) 
        at android.view.View$PerformClick.run(View.java:25926) 
        at android.os.Handler.handleCallback(Handler.java:873) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:193) 
        at android.app.ActivityThread.main(ActivityThread.java:6718) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 

////

public class MainActivity extends AppCompatActivity {

    public SkuDetails skuDetails;
    public BillingClient billingClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        PurchasesUpdatedListener purchasesUpdatedListener = new PurchasesUpdatedListener() {
            @Override
            public void onPurchasesUpdated(BillingResult billingResult, List<Purchase> purchases) {
                // To be implemented in a later section.
            }
        };

        BillingClient billingClient = BillingClient.newBuilder(MainActivity.this)
                .setListener(purchasesUpdatedListener)
                .enablePendingPurchases()
                .build();

        billingClient.startConnection(new BillingClientStateListener() {
            @Override
            public void onBillingSetupFinished(BillingResult billingResult) {
                if (billingResult.getResponseCode() ==  BillingClient.BillingResponseCode.OK) {
                    // The BillingClient is ready. You can query purchases here.
                }
            }
            @Override
            public void onBillingServiceDisconnected() {
                // Try to restart the connection on the next request to
                // Google Play by calling the startConnection() method.
            }
        });


        List<String> skuList = new ArrayList<> ();
        skuList.add("premium_upgrade");
        skuList.add("gas");
        SkuDetailsParams.Builder params = SkuDetailsParams.newBuilder();
        params.setSkusList(skuList).setType(BillingClient.SkuType.INAPP);
        billingClient.querySkuDetailsAsync(params.build(),
                new SkuDetailsResponseListener() {
                    @Override
                    public void onSkuDetailsResponse(BillingResult billingResult,
                                                     List<SkuDetails> skuDetailsList) {
                        // Process the result.
                    }
                });


    }



    public  void  one (View view){
        // An activity reference from which the billing flow will be launched.
        Activity activity = MainActivity.this;

// Retrieve a value for "skuDetails" by calling querySkuDetailsAsync().
        BillingFlowParams billingFlowParams = BillingFlowParams.newBuilder()
                .setSkuDetails(skuDetails)
                .build();
        int responseCode = billingClient.launchBillingFlow(activity, billingFlowParams).getResponseCode();

// Handle the result.
    }


}