View file phpBB3/vendor/twig/twig/lib/Twig/Sandbox/SecurityPolicy.php

<?php

use Twig\Sandbox\SecurityPolicy;

class_exists('Twig\Sandbox\SecurityPolicy');

@trigger_error('Using the "Twig_Sandbox_SecurityPolicy" class is deprecated since Twig version 2.7, use "Twig\Sandbox\SecurityPolicy" instead.', \E_USER_DEPRECATED);

if (false) {
    /** @deprecated since Twig 2.7, use "Twig\Sandbox\SecurityPolicy" instead */
    class Twig_Sandbox_SecurityPolicy extends SecurityPolicy
    {
    }
}