Hi,
I am able to generate Gantt chart from Widget Pro. (But otherwise I was getting Fusion Not Supported error).
I did below two things:
How to configure Jaspersoft Studio on Windows to render Charts, Widgets and Maps Pro components | Jaspersoft Community
1> Download phantomjs-2.1.1-windows.zip (http://phantomjs.org/) and extract contents to C:\phantomjs-2.1.1-windows
2> In Studio, navigate to Window -> Preferences -> Jaspersoft Studio -> Properties and add:
com.jaspersoft.jasperreports.fusion.phantomjs.executable.path=C:\\phantomjs-2.1.1-windows\\bin\\phantomjs.exe
com.jaspersoft.jasperreports.fusion.charts.render.type=html5
com.jaspersoft.jasperreports.fusion.maps.render.type=html5
com.jaspersoft.jasperreports.fusion.widgets.render.type=html5
These settings will render the Pro components using HTML5 renderer.
Cheers,
Divya