Added callback for 'transport-produce'

app.js

@@ -258,9 +258,10 @@ peers.on('connection', async socket => {
         closeCall(callId);
       });
 
+      console.log('----------- videoCalls[callId].producer.id', videoCalls[callId].producer.id);
       // Send back to the client the Producer's id
       callback({
-        id: producer.id
+        id: videoCalls[callId].producer.id
       });
     } catch (error) {
       console.log(`ERROR | transport-produce | callId ${socketDetails[socket.id]} | ${error.message}`);