Fatal error: Uncaught Error: Class "Symfony\Component\Serializer\Exception\UnexpectedValueException" not found in /home2/zpcu9479/app.gennia.fr/vendor/symfony/serializer/Exception/PartialDenormalizationException.php:17 Stack trace: #0 {main} thrown in /home2/zpcu9479/app.gennia.fr/vendor/symfony/serializer/Exception/PartialDenormalizationException.php on line 17