Unsupported operation: Infinity or NaN toInt

[avik1990]

I am getting this error while download a epub from URL(http://app.sristisukh.com/uploaded/epubfiles/aprakrito_2_epub.epub).
I have directly added the above URL in your demo project IRIdium. there also the error is coming.

Error is coming in the Constants class
static formatBytes(bytes, decimals) {
if (bytes == 0) return 0.0;
var k = 1024,
dm = decimals <= 0 ? 0 : decimals,
sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
i = (log(bytes) / log(k)).floor();
return (((bytes / pow(k, i)).toStringAsFixed(dm)) + ' ' + sizes[i]);
}

HELP -----