Fatal error: Uncaught Error: Class 'Symfony\Component\Form\Console\Descriptor\Descriptor' not found in /home/soh-works/www/Stepup_test/vendor/symfony/form/Console/Descriptor/JsonDescriptor.php:22 Stack trace: #0 {main} thrown in /home/soh-works/www/Stepup_test/vendor/symfony/form/Console/Descriptor/JsonDescriptor.php on line 22