Error running your sample code

[lucky-lou]

When I run the sample code I get the following error:

TypeError: Cannot read property 'on' of undefined
at Socket.on in socket-io-server/lib/index.js — line 122
Socket.prototype.on = function (id, event, callback) {
	var socket = this.getSocket(id);
	socket.on.call(socket, event, callback);
};
/**