Fatal error: Uncaught Error: Interface "JMS\Serializer\Handler\SubscribingHandlerInterface" not found in /home/palabrebel/www/kimai/vendor/jms/serializer/src/Handler/SymfonyUidHandler.php:25 Stack trace: #0 {main} thrown in /home/palabrebel/www/kimai/vendor/jms/serializer/src/Handler/SymfonyUidHandler.php on line 25