Whoops timeouts after payment

Situation: You are getting the message “Whoops! Your Session has Expired” after completing offsite payment.

This is a result of the samesite cookie rule that modern browsers are enforcing. If you want to force browsers into lower-security mode by disabling the samesite cookie rules they’re programmed to follow, then you can do the following:

Create a file named includes/extra_configures/samesite_cookie.php containing the following:

<?php
// -----
// Samesite cookie needs to be 'none' when doing offsite payment gateway redirects
//
define('COOKIE_SAMESITE', 'none');