Service call exception while executing WD java custom application

Hello Experts,

Hope you are doing good !

I am facing an issue while executing custom WD java application from Internet Explorer.

Please find attached document for the error message

and please guide me how to resolve the issue?

Error message :

You are not authorized to display this screen, please contact you administrator.------->>> (But previously i am able to access)

Thanks in advence for your reply,

Regards,

Fayaz Shaik.