Fatal error: Uncaught Error: Class 'ApiPlatform\Serializer\AbstractCollectionNormalizer' not found in /var/www/legtux.org/users/weboconsulting/www/vendor/api-platform/core/src/JsonApi/Serializer/CollectionNormalizer.php:30 Stack trace: #0 {main} thrown in /var/www/legtux.org/users/weboconsulting/www/vendor/api-platform/core/src/JsonApi/Serializer/CollectionNormalizer.php on line 30