Getting error on browser console

When i logged in into frappe bench or navigated to any setting such as email or sms i m getting following error on browser console.
Please go through error and browser screen shoot…

libs.min.js:3684 
GET http://localhost/socket.io/?EIO=3&transport=polling&t=1506080127925-4648 500 (Internal Server Error)

libs.min.js:3684 GET http://localhost/socket.io/?EIO=3&transport=polling&t=1506080127925-4648 500 (Internal Server Error)