chassis app returns empty list

When I ran the chassisRackVSphere plug-ins, it worked well. After few attempts (had to restart the virgo server, etc.,), the chassis list is always empty. I commented out the invalidQuerySpec exception as suggested in another thread. I verified the java service code that the chassisCount is set to 4 and it iterates thru a loop to create the chassis objects.

I have added debug logs (@info level) in ChassisRAckVSphereDataAdapter.java to trace the calls. Where do the logs go? I didn't find it in serviceability directory of serenity-client.

thanks in advance!