Fatal error: Uncaught Error: Interface "Monolog\Formatter\FormatterInterface" not found in /home/zdpktgd/ptc/vendor.old/symfony/monolog-bridge/Formatter/VarDumperFormatter.php:21 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/monolog-bridge/Formatter/VarDumperFormatter.php on line 21