Fatal error: Uncaught Error: Class 'JMS\Serializer\Metadata\ClassMetadata' not found in C:\xampp\htdocs\sitewebanader\alertesethiques\vendor\jms\serializer\tests\Metadata\Driver\php\Discriminator.Vehicle.php:6 Stack trace: #0 {main} thrown in C:\xampp\htdocs\sitewebanader\alertesethiques\vendor\jms\serializer\tests\Metadata\Driver\php\Discriminator.Vehicle.php on line 6