Fatal error: Uncaught Error: Class "Magento\CatalogSearch\Model\Indexer\Fulltext" not found in /var/www/magento/html/app/code/BBNT/Elasticsearch/Model/Indexer/Fulltext.php:11 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/BBNT/Elasticsearch/Model/Indexer/Fulltext.php on line 11