I'm new  to service desk and I need your clarification on my new installation.

I just installed servicedesk application free and standard edition on Linux server and I observed that I could not open the some modules like add Technician, Requester, LDAP e.tc. It gives error with message

 Sorry an error has occured

Unknown error occured while processing your request. 

Kindly help

Regards 

Olawale.