Fatal error: Uncaught Error: Class "ClickHouseDB\Cluster" not found in /home/ramy3/public_html/ws/vendor/smi2/phpclickhouse/example/cluster/cluster_03_list.php:9 Stack trace: #0 {main} thrown in /home/ramy3/public_html/ws/vendor/smi2/phpclickhouse/example/cluster/cluster_03_list.php on line 9