I get Jigadmin warning: 'no logger specified'

Hi,

I RUN:		java org.w3c.jigsaw.Main -root <Inst-Dir>/Jigsaw/Jigsaw
 
I SEE:

loading properties from:
/home/cn1w00/jigsaw_server/Jigsaw/Jigsaw/config/server.props
Jigsaw[2.0.3]: serving at http://comnet13.technion.ac.il:8001/
*** Warning : JigAdmin[2.0.3]: no logger specified, not logging.   <<----
JigAdmin[2.0.3]: serving at http://comnet13.technion.ac.il:8009/

Can i just ignore this Warning ?
If not how can i fix that ?

I'v been able to run jigadmin with no warnings.

Thanks in advance,
Roni