Paypal button not work in Safari and prompt error

[patrick35]

On Firefox, even I have successfully setup the platform on sunday, I find it prompt an error message today:

I just don't know why.

For the same script,

on Safari, the checkout.js is totally not worked. The popup window just does not show up

Here is my script:

         return paypal.request.get('<?php echo $urlSetupPayment; ?>').then(function(data) {
                return data.paymentId;
            });

Could I know why? It works on Sunday. I need it so much.