Fix video call and voice call issue not working node is webrtc stun turn

It's a chat application where there's 1-1 group n channel chat and there's 1-1 video and voice call also it's was working perfectly 2 days ago now it has suddenly stopped working don't know how so want to fix that we are using node js webrtc stun turn for video n voice all Only apply if you have previously worked on it And we also want to add some new feature in this like group video call and voice call