Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Normalizer\NormalizerInterface" not found in /var/www/html/demo.ininli.ca/releases/16/vendor/symfony/serializer/Normalizer/ConstraintViolationListNormalizer.php:25 Stack trace: #0 {main} thrown in /var/www/html/demo.ininli.ca/releases/16/vendor/symfony/serializer/Normalizer/ConstraintViolationListNormalizer.php on line 25