Fatal error: Uncaught Error: Class "Symfony\Component\Workflow\Dumper\GraphvizDumper" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\workflow\Dumper\StateMachineGraphvizDumper.php:17 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\workflow\Dumper\StateMachineGraphvizDumper.php on line 17