Fatal error: Uncaught Error: Class "JMS\Serializer\AbstractVisitor" not found in C:\xampp\htdocs\bateriasec\vendor\jms\serializer\src\JsonSerializationVisitor.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\bateriasec\vendor\jms\serializer\src\JsonSerializationVisitor.php on line 13