Fatal error: Uncaught Error: Class "WebSocket\Exception" not found in E:\www\xmvc\v5.0\composer\vendor\textalk\websocket\lib\BadOpcodeException.php:12 Stack trace: #0 {main} thrown in E:\www\xmvc\v5.0\composer\vendor\textalk\websocket\lib\BadOpcodeException.php on line 12