There are no automatic redirection with paypal/rest-api-sdk-php

Hello,
Implementing paypal in my laravel 5.8 app
and looking at the code snippet :
https://ift.tt/301T20X
I do not seer which is returns valid format?
here https://ift.tt/2FQkCXo
I found that redirect_urls must be used , so my button definition is :

                        <script>...

Code (markup):

There are no automatic redirection with paypal/rest-api-sdk-php

from PayPal https://ift.tt/300vvxg
via IFTTT