added condition

Signed-off-by: heyhiru <hirentimbadiya74@gmail.com>

client/src/service/peer.js

@@ -1,6 +1,6 @@
 class PeerService {
     constructor() {
-        if (!this.peer) {
+        if (typeof window !== 'undefined' && !this.peer) {
             this.peer = new RTCPeerConnection({
                 iceServers: [{
                     urls: [