Sandbox Credit card payment is not processing

[Ilankumaran-developer]

Hi,

I have been working hard for two days to process credit card using paypal-adaptive and consistently it is failing to work..It is good to see that it redirects user from my website to the sandbox paypal for authorization., After entering card details., It keeps loading.....

var Paypal = require('paypal-adaptive');

    var paypalSdk = new Paypal({
        userId: 'XXXXXXXXXXXXXX_api1.gmail.com',
        password: 'XXXXXXXXXXXXXXXXXXXX',
        signature: 'XXXXXXXXXXXX',
        sandbox: true 
    });
    var payload = {
requestEnvelope: {
    errorLanguage:  'en_US'
},
actionType:     'PAY',
currencyCode:   'USD',
feesPayer:      'EACHRECEIVER',
memo:           'Chained payment example',
cancelUrl:      'http://localhost:3003/paymentcancel',
returnUrl:      'http://localhost:3003/paymentsuccess',
receiverList: {
    receiver: [
        {
            email:  'XXXXXXXXXXXXXXXXXXXXXXXX',
            amount: '100.00',
            primary:'true'
        }
    ]
}

};

Any help would be appreciated ....