Thank you!
By looking at the trace and log files I was able to identify the problem.
For anyone who is having the same problem , the log files can be found at: /usr/sap/<SAPSID>\<instance_name>/j2ee/cluster/server<n>/log
Or view this link: Viewing Log and Trace Files - SAP NetWeaver Composition Environment Library - SAP Library
I was able to find these errors:
Thanks again Yogesh Patel.