Fatal error: Uncaught Error: Interface 'Serializers\Serializer' not found in /var/www/html/wiki_2023/extensions/SemanticMediaWiki/src/Serializers/ExpDataSerializer.php:16 Stack trace: #0 {main} thrown in /var/www/html/wiki_2023/extensions/SemanticMediaWiki/src/Serializers/ExpDataSerializer.php on line 16