Fatal error: Uncaught Error: Interface 'Symfony\Component\Serializer\Normalizer\NormalizerInterface' not found in C:\SistemasPHP\observatorio4\vendor\symfony\serializer\Normalizer\AbstractNormalizer.php:30 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\symfony\serializer\Normalizer\AbstractNormalizer.php on line 30