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