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