SCC gives, unknown error has occurred when we click the Agentry app in SCC.

Hello Experts,

I am working on SAP Work Manager-60 with SMP-2.3.3.0.

Some times I require to check the active users for this app. in SCC but when I click this app, SCC gives me an error as below.

Error :-  An Unknown server error has occurred, Please check log files.

Error Log :- Gives Null pointer exception while trying to read getLastCommunication date and time.

Please help me If any body has already faced this issue or knows the solution.

PFA logs and errors for the same.

Thanks,

Sudhir.