Fatal error: Uncaught Error: Class "Elastica\Query\FunctionScore" not found in /var/www/html/w/extensions/CirrusSearch/includes/Search/Rescore/FunctionScoreDecorator.php:16 Stack trace: #0 {main} thrown in /var/www/html/w/extensions/CirrusSearch/includes/Search/Rescore/FunctionScoreDecorator.php on line 16