Fatal error: Uncaught Error: Class "Magento\Elasticsearch\Block\Adminhtml\System\Config\Elasticsearch5\TestConnection" not found in /var/www/magento/html/generated/code/Magento/Elasticsearch/Block/Adminhtml/System/Config/Elasticsearch5/TestConnection/Interceptor.php:7 Stack trace: #0 {main} thrown in /var/www/magento/html/generated/code/Magento/Elasticsearch/Block/Adminhtml/System/Config/Elasticsearch5/TestConnection/Interceptor.php on line 7