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