Fatal error: Uncaught Error: Interface 'Ratchet\Http\HttpServerInterface' not found in /var/www/html/stz-api/vendor/cboden/ratchet/src/Ratchet/WebSocket/WsServer.php:25 Stack trace: #0 {main} thrown in /var/www/html/stz-api/vendor/cboden/ratchet/src/Ratchet/WebSocket/WsServer.php on line 25