Fatal error: Declaration of SRF\vCard\vCardFileExportPrinter::getFileName(SMW\Query\QueryResult $queryResult) must be compatible with SMW\Query\ResultPrinters\FileExportPrinter::getFileName(SMW\Query\QueryResult $queryResult): string|false in /var/www/html/extensions/SemanticResultFormats/src/vCard/vCardFileExportPrinter.php on line 58