Paypal API REST adapter au button js

Bonjour,

Voila je rencontre un petit problème avec mon code.

Ce que je fais

mes routes:

// Paypal
Route::group(array('prefix' => 'paypal'), function () {
Route::get('create', 'PaymentController@paypal');
Route::get('execute', 'PaymentController@executePayment');
});

public function paypal()
{
$apiContext = new \PayPal\Rest\ApiContext(
new \PayPal\Auth\OAuthTokenCredential(
getenv('PAYPAL_CLIENT_ID'),
getenv('PAYPAL_SECRET')
)
);

    $list = new \PayPal\Api\ItemList();
        $item = (new \PayPal\Api\Item())
            ->setName('Lettre de résiliation')
            ->setPrice("7.25")
            ->setCurrency('EUR')
            ->setQuantity(1);
        $list->addItem($item);

    $details = (new \PayPal\Api\Details())
        ->setSubtotal("7.25");

    $amount = (new \PayPal\Api\Amount())
        ->setTotal("7.25")
        ->setCurrency("EUR")
        ->setDetails($details);

    $transaction = (new \PayPal\Api\Transaction())
        ->setItemList($list)
        ->setDescription('Achat sur resilier.dev')
        ->setAmount($amount)
        ->setCustom('demo-1');

    $payment = new \PayPal\Api\Payment();
    $payment->setTransactions([$transaction]);
    $payment->setIntent('sale');
    $redirectUrls = (new \PayPal\Api\RedirectUrls())
        ->setReturnUrl('http://resilier.dev/paypal/execute')
        ->setCancelUrl('http://resilier.dev/paiement.php');
    $payment->setRedirectUrls($redirectUrls);
    $payment->setPayer((new \PayPal\Api\Payer())->setPaymentMethod('paypal'));

    try {
        $payment->create($apiContext);
        return json_encode([
            'id' => $payment->getId()
        ]);
    } catch (\PayPal\Exception\PayPalConnectionException $e) {
        var_dump(json_decode($e->getData()));
    }
}

public function executePayment()
{
    $apiContext = new \PayPal\Rest\ApiContext(
        new \PayPal\Auth\OAuthTokenCredential(
            getenv('PAYPAL_CLIENT_ID'),
            getenv('PAYPAL_SECRET')
        )
    );

    $payment = \PayPal\Api\Payment::get(Input::get('paymentID'), $apiContext);

    $execution = (new \PayPal\Api\PaymentExecution())
        ->setPayerId(Input::get('payerID'));

    try {
        $payment->execute($execution, $apiContext);
    } catch (\PayPal\Exception\PayPalConnectionException $e) {
        header('HTTP 500 Internal Server Error', true, 500);
        var_dump(json_decode($e->getData()));
    }
}

Ce que je veux

je n'arrive pas à adapter au button js , les functions marche je n'arrive juste pas a executer mon paiement sur la fenetre. code js :

        var CREATE_PAYMENT_URL = '/paypal/create';
        var EXECUTE_PAYMENT_URL = '/paypal/execute';

        paypal.Button.render({

            env: 'sandbox', // Or 'production'

            commit: true, // Show a 'Pay Now' button

            // Pour customiser le button
            style: {
                color: 'gold',
                size: 'responsive'
            },

            payment: function () {
                return paypal.request.get(CREATE_PAYMENT_URL).then(function (data) {
                    return data.id;
                });
            },

            onAuthorize: function (data) {
                return paypal.request.get(EXECUTE_PAYMENT_URL, {
                    paymentID: data.paymentID,
                    payerID: data.payerID
                }).then(function () {

                });
            }

        }, '#paypal-button');