Edit File: SecurityError.php
<?php use Twig\Sandbox\SecurityError; class_exists('Twig\Sandbox\SecurityError'); @trigger_error(sprintf('Using the "Twig_Sandbox_SecurityError" class is deprecated since Twig version 2.7, use "Twig\Sandbox\SecurityError" instead.'), E_USER_DEPRECATED); if (\false) { /** @deprecated since Twig 2.7, use "Twig\Sandbox\SecurityError" instead */ class Twig_Sandbox_SecurityError extends SecurityError { } }