Update app.py

app.py

@@ -82,12 +82,12 @@ with col1:
 }
     ctx = webrtc_streamer(
         key="example",
-        mode=WebRtcMode.SENDRECV,
         video_transformer_factory=lambda: VideoTransformer(st.session_state),
         media_stream_constraints={"video": True, "audio": False},
         async_transform=True,
-        rtc_configuration={"iceServers": get_ice_servers()},
-        
+        rtc_configuration={
+            "iceServers": [{"urls": ["stun:stun.l.google.com:19302"]}]
+        }
     )
 
 with col2: