Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Normalizer\NormalizerInterface" not found in /home2/zpcu9479/app.gennia.fr/vendor/symfony/serializer/Normalizer/DateIntervalNormalizer.php:23 Stack trace: #0 {main} thrown in /home2/zpcu9479/app.gennia.fr/vendor/symfony/serializer/Normalizer/DateIntervalNormalizer.php on line 23