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