[CalendarServer-users] Internal Server Error

Hi friends, I have developed the core and web framework for CALDAV client using python and twisted. But, I am facing some problem,, When I try to send a report to the calendar server for a month which has lots of events, it throws an internal server error. When I reduce the time window of the report to one day, so that it can only fetch events per day or when the No. of events are less and in my case, it's one per day, It works fine. Can anyone tell me what's the problem. Is there some problem with the server or is there any limit on the size of report. Thanks UHCop