Fatal error: Uncaught Error: Class 'Symfony\Component\Validator\Constraints\Existence' not found in /home/maplywuk/truedemocratic.party/core/vendor/symfony/validator/Constraints/Required.php:17 Stack trace: #0 {main} thrown in /home/maplywuk/truedemocratic.party/core/vendor/symfony/validator/Constraints/Required.php on line 17