Fatal error: Uncaught Error: Class 'JsonContent' not found in /var/www/html/wiki_2023/extensions/SemanticMediaWiki/src/MediaWiki/Content/SchemaContent.php:38 Stack trace: #0 {main} thrown in /var/www/html/wiki_2023/extensions/SemanticMediaWiki/src/MediaWiki/Content/SchemaContent.php on line 38