Fatal error: Uncaught Error: Class "Symfony\Component\Cache\Adapter\AbstractAdapter" not found in /home/zdpktgd/ptc/vendor.old/symfony/cache/Adapter/RedisAdapter.php:17 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/cache/Adapter/RedisAdapter.php on line 17