Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\SerializerInterface" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\serializer\Debug\TraceableSerializer.php:29 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\serializer\Debug\TraceableSerializer.php on line 29