Goto SPRO --> SAP Screen Personas > Maintain Whitelist URLs
There you'll see Maintain Whitelist URLs. There I simply added the hostname of the server our personas was on.
You can also just implement note 2016378 which resolves the issue as well
Implement all the below notes mentioned
201637
2016378
2026487
After that go to Tcode - SICF_SESSIONS
Activate the client in which you are running personas