Edit File: Psr6Cache.php
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Cache\Simple; use Symfony\Component\Cache\Psr16Cache; @trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.3, use "%s" instead.', Psr6Cache::class, Psr16Cache::class), \E_USER_DEPRECATED); /** * @deprecated since Symfony 4.3, use Psr16Cache instead. */ class Psr6Cache extends Psr16Cache { }