Hello,
Please follow the steps below to enable the debug traces
1. set the prameter TraceLevel=debug in cs.conf
2. set the parameter loglevel=debug in httpd.conf (available in <apacheroot>/conf)
3. restart the apache web server (./apachectl restart)
After doing the above, please reproduce the error and check the error_log and see if there have more information.
Regards,
David