command to run webrtc/wss call

[nil040]

I am trying to run webrtc calls using below command but facing error

**Below command is NOT working for sip call over WSS: **
./sipexer -invite -vl 3 -websocket-origin wss://10.10.10.10:443 -co -com -fuser alice -tuser bob -cb -xh "Max-Forwards:70" -ap "abab..." -ha1 -sw 10000 -ti true -sd -su wss:10.10.10.20:443

error - [error] [sipexer.go:2011] main.SIPExerSendWSS(): error: %!v(PANIC=Error method: runtime error: invalid memory address or nil pointer dereference)

Below command is working fine for sip call over UDP:
./sipexer -invite -vl 3 -co -com -fuser alice -tuser bob -cb -xh "Max-Forwards:70" -ap "abab..." -ha1 -sw 10000 -sd -su udp:10.10.10.40:5060