Trying to integrate google pay to my android app

Question

I'm attempting to add Google Pay functionality to my Android app. I'm trying to implement the instructions in a tutorial, but I keep receiving the following error: E/AndroidRuntime: FATAL EXCEPTION: main Process: com.myapp.sqill, PID: 12555 android.content.ActivityNotFoundException: No Activity found to handle Intent act=android.intent.action.VIEW dat=upi:/pay? pkg=com.google.android.apps.nbu.paisa.user pa=your-merchant-vpa@xxx&pn=your-merchant-name&mc=your-merchant-code&tr=your-transaction-ref-id&tn=your-transaction-note&am=your-order-amount&cu=INR

Here is my code so far. Thanks in advance

//PaymentPageActivity.java

 Button pay_button;
    final int UPI_PAYMENT=0;
    Integer amount=5;

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

        pay_button=findViewById(R.id.pay);

        //startActivity

        pay_button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                payUsingUpi();


            }
        });


    }

    private void payUsingUpi() {

        Uri uri =
                new Uri.Builder()
                        .scheme("upi")
                        .authority("pay")
                        .appendQueryParameter("pa", "your-merchant-vpa@xxx")
                        .appendQueryParameter("pn", "your-merchant-name")
                        .appendQueryParameter("mc", "your-merchant-code")
                        .appendQueryParameter("tr", "your-transaction-ref-id")
                        .appendQueryParameter("tn", "your-transaction-note")
                        .appendQueryParameter("am","$5.00")
                        .appendQueryParameter("cu", "INR").build();

        String GOOGLE_PAY_PACKAGE_NAME = "com.android";
        int GOOGLE_PAY_REQUEST_CODE = 123;
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(uri);
        intent.setPackage(GOOGLE_PAY_PACKAGE_NAME);
       startActivityForResult(intent, GOOGLE_PAY_REQUEST_CODE);
    }