palpay checkout payment integration in php

I want to move from sandbox to live payment but when I click on paypal button nothing happens, every thing worked fine on sandbox. The Code is as follow:

paypal.Buttons({ // Sets up the transaction when a payment button is clicked https://ift.tt/htK8MDZ

    createOrder: (data, actions) => {
        
      return actions.order.create({

        purchase_units: [{

          amount: {

            value: document.getElementById('amount').value // Can also reference a variable or function

          }

        }]

      });

    },
    

    // Finalize the transaction after payer approval

    onApprove: (data, actions) => {

      return actions.order.capture().then(function(orderData) {

        window.open('verify_transactions.php','_self');

      });

    }

  }).render('#paypal-button-container');