Fatal error: Uncaught Error: Class "Elastica\Param" not found in /var/www/html/w/vendor/ruflin/elastica/src/Aggregation/AbstractAggregation.php:10 Stack trace: #0 {main} thrown in /var/www/html/w/vendor/ruflin/elastica/src/Aggregation/AbstractAggregation.php on line 10