I'm pretty new to Cewolf and all.
I followed the tutorial and I get responses when I try to call the rendering servlet
but I still get a NullPointer at AbstractChartDefinition.getChart() when I try to create a chart.
Instead of a broken image or the image of the chart I get this (http://img.photobucket.com/albums/v335/endorphines_/cewolfjsessionidwvPXDi907clAYsWCVd-.jpg) instead.
Can someone tell me what did I do wrong or what am I missing?