Fatal error: Uncaught Error: Class "ClickHouseDB\Cluster" not found in /home/ramy3/public_html/ws/vendor/smi2/phpclickhouse/example/cluster/cluster_07_test_ddl.php:11 Stack trace: #0 {main} thrown in /home/ramy3/public_html/ws/vendor/smi2/phpclickhouse/example/cluster/cluster_07_test_ddl.php on line 11