Tutorial: Local Cloud 1st Time instructions [01 Oct 15]

I am doing every the way you explained but I get the following response on server terminal :

Your server IP address is: 192.168.1.38
server started { host: ‘localhost’, port: 5683 }
192.168.1.38 - - [Thu, 01 Oct 2015 22:05:07 GMT] “POST /v1/devices HTTP/1.1” 400 109 “-” “-”