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