Fatal error: Uncaught Error: Class 'Symfony\Component\Validator\Exception\ValidatorException' not found in C:\SistemasPHP\observatorio4\vendor\symfony\validator\Exception\NoSuchMetadataException.php:17 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\symfony\validator\Exception\NoSuchMetadataException.php on line 17