Fatal error: Uncaught Error: Class 'Symfony\Component\Form\AbstractExtension' not found in C:\SistemasPHP\ccp\vendor\symfony\form\Extension\Validator\ValidatorExtension.php:25 Stack trace: #0 {main} thrown in C:\SistemasPHP\ccp\vendor\symfony\form\Extension\Validator\ValidatorExtension.php on line 25