Fatal error: Uncaught Error: Class 'Symfony\Component\Serializer\Exception\RuntimeException' not found in C:\SistemasPHP\observatorio4\vendor\symfony\serializer\Exception\ExtraAttributesException.php:19 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\symfony\serializer\Exception\ExtraAttributesException.php on line 19