Fatal error: Uncaught Error: Class 'ApiPlatform\Serializer\AbstractItemNormalizer' not found in /var/www/legtux.org/users/weboconsulting/www/vendor/api-platform/core/src/JsonApi/Serializer/ItemNormalizer.php:46 Stack trace: #0 {main} thrown in /var/www/legtux.org/users/weboconsulting/www/vendor/api-platform/core/src/JsonApi/Serializer/ItemNormalizer.php on line 46