Fatal error: Uncaught Error: Class "Ratchet\AbstractConnectionDecorator" not found in C:\xampp\htdocs\hannoole\schol\vendor\cboden\ratchet\src\Ratchet\WebSocket\WsConnection.php:11 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hannoole\schol\vendor\cboden\ratchet\src\Ratchet\WebSocket\WsConnection.php on line 11