SM_WORKCENTER Error

Hello Gurus

I'm getting an error when I run the tcode SM_WORKCENTER in SolMan 7.1. The first erros was http 403 - forbidden, I solved it activating some services in SICF according to note: SAP Note 517484 - Inactive services in the Internet Communication Framework.

So the login page appear for me, but when I press the Log On button appear the error below, informing that the site is in maintenance or the site has a programming error:

Can you help?

Regards