Uncaught SyntaxError: Duplicate data property in object literal not allowed in strict mode

Hello i was trying to use your d3 plugin to draw a pie chart but this error appeared in the console :
Uncaught SyntaxError: Duplicate data property in object literal not allowed in strict mode
in your online demo example everything works fine but it is not working on local, what i did is that i replaced the code of d3.ay-pie-chart.js with the code from your demo (the d3.ay-pie-chart.js code), and the demo works fine on local now, please let me know when you fix this error, regards.