500 internal error while approving leave request

Hi All,

One of my user when trying to approve leave request, he is getting the following error. it was working previously but suddenly thsi error has come

500 internal server error

Application error occurred during request processing

Details: com.sap.tc.webdynpro.services.sal.core.Dispatcher exception: The requested deployable object 'sap.com/ess~lea' and application 'leaverequestapprove' are not deployed

Can anyone advise on this error please!!!

Thanks!

Swarnaprakash