Fatal error: Uncaught Error: Class 'Symfony\Component\Validator\Constraint' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/core-bundle/Validator/Constraints/InlineConstraint.php:15 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/core-bundle/Validator/Constraints/InlineConstraint.php on line 15