Debugger Console : strange messages

When I'm showing a graphe (that is made on javascript) trough a UIWebView, there are a lot of error messages in the Debugger Console. This is always the same message :

<Error>: CGContextSetLineDash: invalid dash array: at least one element must be non-zero.

How can I fix it???

PS: I don't draw any graph, it's a javascript graph that's showed trough the browser (UIWebView)

Thanks to help me, that error is killing me :-)

If your graph is amCharts, they already know about it and will [probably] fix it. Here is a link to where they discuss this issue and it might answer your question at some point. http://www.amcharts.com/forum/viewtopic.php?id=9650