diff --git a/app/src/RoomClient.js b/app/src/RoomClient.js
index 762c0cf..e133a30 100644
--- a/app/src/RoomClient.js
+++ b/app/src/RoomClient.js
@@ -1083,8 +1083,8 @@ export default class RoomClient
 			logger.debug(
 				'changeWebcam() | new selected webcam [device:%o]',
 				device);
-
-			this._webcamProducer.track.stop();
+			if (this._webcamProducer && this._webcamProducer.track)
+				this._webcamProducer.track.stop();
 
 			logger.debug('changeWebcam() | calling getUserMedia()');
 
@@ -1096,14 +1096,21 @@ export default class RoomClient
 						...VIDEO_CONSTRAINS[resolution]
 					}
 				});
-
-			const track = stream.getVideoTracks()[0];
-
-			await this._webcamProducer.replaceTrack({ track });
-
-			store.dispatch(
-				producerActions.setProducerTrack(this._webcamProducer.id, track));
-
+			if (stream){
+				const track = stream.getVideoTracks()[0];
+				if (track) {
+					await this._webcamProducer.replaceTrack({ track });
+	
+					store.dispatch(
+						producerActions.setProducerTrack(this._webcamProducer.id, track));
+							
+				} else {
+					logger.warn('getVideoTracks Error: First Video Track is null')
+				}
+	
+			} else {
+				logger.warn ('getUserMedia Error: Stream is null!') 
+			}
 			store.dispatch(settingsActions.setSelectedWebcamDevice(deviceId));
 
 			await this._updateWebcams();