Problems using d3.js library in Powerbuilder

I am struggling with a java script graph from a D3.js library.

I have downloaded the library and data ( open source)  files from github.com, and executed in the browser in html without trouble. But when I try to open it up from powerbuilder ( 12.5), I get the following script  error: “Cannot obtain the property “prototype” of null reference or undefined”.

I am getting mad with it: how is it posible that I can open the graph with any browser and I cannot open it within powerbuilder?

if anyone knowswhere the problem is, please could you tell me?

thanks in advance