If first stack record has 0 value than other stack not show

In stack bar chart, If there is first stack record has no value(0) than other stacks are not show.

I am attached completed demo here for check.

In firefox given error in console,
An invalid or illegal string was specified" code: "12
[Break on this error] b[h]);a.beginPath();var p=this.I(a,t,q…,c);f=c-e*f+g;if(f<i)f=i;a.lineTo(b,
dhtmlxchart.js (line 47)

Can anyone give me idea where i am wrong or give me solution?

Thanks.
CompletedDemo.zip (19.2 KB)

see viewtopic.php?f=8&t=19111