Hi sangara,
as I can see in your attached log files, you deployed OpenWorkdesk Community Edition on an IBM WebSphere application server, but the OpenWorkdesk Community Edition is ONLY supported on Apache Tomcat application servers.
Anyway, as far as I can see, this problem seems to be a library collision problem between OpenWorkdesk´s delivered libraries and the libraries coming with IBM WebSphere.
Try deploying OpenWorkdesk Community Edition on a Tomcat and please keep me up to date, if the problem exists there too.