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NullPointerException when using renderToStream 3-args variant


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Hello! I have succesfully integrated chartfx with my existing app and managed to include a map in a jsp test page. The renderControl and renderToStream methods seem to be working fine with my code. When i try to use the 3 arg version of renderToStream  without any code modifications other than this  i keep getting NPE:


 at com.softwarefx.chartfx.server.internal.ej.a(SourceFile:29)

 at com.softwarefx.chartfx.server.internal.i.cw(SourceFile:168)

 at com.softwarefx.chartfx.server.internal.i.c(SourceFile:218)

 at com.softwarefx.chartfx.server.internal.bo.b(SourceFile:126)

 at com.softwarefx.chartfx.server.internal.fd.rM(SourceFile:561)

 at com.softwarefx.chartfx.server.internal.gl.c(SourceFile:107)

 at com.softwarefx.chartfx.server.internal.dp.b(SourceFile:60)

 at com.softwarefx.chartfx.server.internal.Chart.a(SourceFile:4484)

 at com.softwarefx.chartfx.server.internal.Chart.a(SourceFile:4684)

 at com.softwarefx.chartfx.server.internal.Chart.a(SourceFile:4738)

 at com.softwarefx.chartfx.server.ChartServer.renderToStream(SourceFile:78)

I have tried passing all sorts of OutputStream and Writer implementations to the renderToStream call but all i get is this exception. Since code is obfuscated i have no clue what i am doing wrong, so any help would be greatly appreciated. 



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