Fatal error: Uncaught Error: Class 'Evenement\EventEmitter' not found in /var/www/html/ng-crm/yiiapp/vendor/react/socket/src/SocketServer.php:8 Stack trace: #0 {main} thrown in /var/www/html/ng-crm/yiiapp/vendor/react/socket/src/SocketServer.php on line 8