404 error in Mobile appliction development with mobile SDK after the session time out

I developed a small hybrid mobile application which will show Account Tab and on click of the Tab it will show the List views of the Account available to the me. this is working very good. when i minimized the app on the mobile and opened after some time and if my session is expired the App the is giving me an error of 404 resource not found instead of 401 Session Expired.

Can any one help me how to solve this error. Error Message