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