Problem in using module 5.2 (data visualisation)

Hi.
I uploaded the file. But When I click the device name on my home page for cloud.boltiot.com, I am geting this:

> NO VALUES AND AXES

Moreover when I am trying to open the canvas.js file , I am getting this:

Expectation : Please explain why I am getting these two problems and hence give the method to rectify it .