hi Abhi,
yes this error is the right place you are looking into BUT we would need more details.
Can you please have a look into the link below and send all the information (Log files + Har files)
http://scn.sap.com/community/gui/blog/2013/06/28/sap-screen-personas--client-side-debugging
Without all these information, it will be difficult to know what Personas is sending and what its receiving because of which you see the error above.
Sushant