java.lang.ClassCastException error when executing rune

[gjswan]

I have created a report  in ireport and tried to integrate it to jasperserver.I am using 7 subreports among that 4 are used by charts.when i execute run jasper server report,it is throwing error.So I individually tried the subreports.Three of the reports have below error.

 

java.lang.ClassCastException: java.awt.Color cannot be cast to java.awt.Stroke 

 

and one report has the following error

 

java.lang.ClassCastException: cannot assign instance of java.util.HashMap to field org.jfree.chart.labels.StandardPieSectionLabelGenerator.attributedLabels of type org.jfree.util.ObjectList in instance of org.jfree.chart.labels.StandardPieSectionLabelGenerator.

 

 

 

Can anyone please help me?

 

Thanks in advance

 

Geethu