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