Fatal error: Uncaught Error: Interface 'Symfony\Component\Serializer\Normalizer\NormalizerInterface' not found in /home/benjamincb/demos/acdg/vendor/symfony/serializer/Normalizer/AbstractNormalizer.php:31 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg/vendor/symfony/serializer/Normalizer/AbstractNormalizer.php on line 31