Fatal error: Uncaught Error: Class "Doctrine\DBAL\Schema\Comparator" not found in /home/zdpktgd/ptc/vendor.old/doctrine/dbal/src/Platforms/MySQL/Comparator.php:20 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/doctrine/dbal/src/Platforms/MySQL/Comparator.php on line 20