Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Mapping\Loader\LoaderChain" not found in C:\laragon\www\siesicis\ovh-sms\vendor\symfony\validator\Mapping\Loader\FilesLoader.php:23 Stack trace: #0 {main} thrown in C:\laragon\www\siesicis\ovh-sms\vendor\symfony\validator\Mapping\Loader\FilesLoader.php on line 23