Fatal error: Uncaught Error: Class "ilLuceneQueryParser" not found in /var/www/html/ilias/components/ILIAS/Search/classes/Lucene/class.ilLuceneAdvancedQueryParser.php:29 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Search/classes/Lucene/class.ilLuceneAdvancedQueryParser.php on line 29