SAS Internal Accounts like sasadm@saspw cannot launch workspace server sessions,try removing sas administrator,sasusers,sas system services privileges for the test user you have created and Assign (Web Report Studio: Advanced or Web Report Studio: Report Creation or Web Report Studio: Report Viewing ) Role in order to access Web Report Studio.
The SAS Users Group for Administrators (SUGA) is open to all SAS administrators and architects who install, update, manage or maintain a SAS deployment.