Resolution:
Please add this line into your deployed .tra file for your BW processes and try
again:
java.property.java.awt.headless=true
It enables headless mode.Headless mode is a system configuration in which graphic adapter, keyboard or mouse are lacking. For example, mainframes or dedicated servers do not support a display, keyboard or mouse. On the other hand, such environments possess a substantial computing power, which can be used for the non-visual features realization.

This property is available since JDK 1.4

Keywords :- jfreechart, BW