Fatal error: Uncaught Error: Class "Symfony\Component\Cache\Adapter\AbstractAdapter" not found in /var/www/html/includes/php-ffmpeg/vendor/symfony/cache/Adapter/PhpFilesAdapter.php:18 Stack trace: #0 {main} thrown in /var/www/html/includes/php-ffmpeg/vendor/symfony/cache/Adapter/PhpFilesAdapter.php on line 18