Error en step6 ejecutando nodejs server.js

[jiwidi]

Ejecuto npm install sin ningun problema pero a la hora de ejecutar nodejs server.js me sale este error:

/home/pi/Desktop/Raspberry-Pi-Status/node_modules/socket.io/lib/socket.js:339
Socket.prototype.$emit = EventEmitter.prototype.emit;
^
TypeError: Cannot read property 'emit' of undefined
at Object. (/home/pi/Desktop/Raspberry-Pi-Status/node_modules/socket.io/lib/socket.js:339:48)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object. (/home/pi/Desktop/Raspberry-Pi-Status/node_modules/socket.io/lib/manager.js:20:14)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)