Page with google chart showing blank on navigation through panel or navbar

A page with google chart shows perfectly fine if set as startup page for my app during testing. But when any other app page is setup as startup page and then I try to go to the google chart page (called Usage_prepaid), it shows blank. I have tried placing 'navigate to - on click' both in navbar and in side-panel (as 'my usage' button navbar or listitem in panel). None of them work.

App link is http://appery.io/app/view/177c5783-d9...

Chart looks as following if setup as startup page for the app.
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