Fatal error: Uncaught Error: Interface 'Symfony\Component\Form\FormExtensionInterface' not found in /var/www/legtux.org/users/weboconsulting/www/vendor/symfony/form/PreloadedExtension.php:21 Stack trace: #0 {main} thrown in /var/www/legtux.org/users/weboconsulting/www/vendor/symfony/form/PreloadedExtension.php on line 21