Fatal error: Uncaught Error: Class "Symfony\Component\Validator\ConstraintValidator" not found in /home/melozbco/public_html/vendor/symfony/validator/Tests/Fixtures/ConstraintAValidator.php:18 Stack trace: #0 {main} thrown in /home/melozbco/public_html/vendor/symfony/validator/Tests/Fixtures/ConstraintAValidator.php on line 18