Fatal error: Uncaught Error: Class "SMW\DataValues\StringValue" not found in /var/www/html/extensions/SemanticMediaWiki/src/DataValues/AllowsPatternValue.php:18 Stack trace: #0 {main} thrown in /var/www/html/extensions/SemanticMediaWiki/src/DataValues/AllowsPatternValue.php on line 18