DOMException: Failed to set remote answer sdp: Called with SDP without ice-ufrag and ice-pwd

i (linphone)want to answer a call from my browser ,it’s impossble ,
i always having this message: DOMException: Failed to set remote answer sdp: Called with SDP witho.ice-ufrag and ice-pwd
please help me: i 'am using sipjs for my signal ,asterisk on ubuntu 11.22.0