Update app.py

app.py

@@ -856,11 +856,13 @@ if st.session_state["generated_questions"]:
                 if webrtc_ctx.state.playing:
                     if st.button("⏹️ Stop Recording"):
                         wav_path = f"response_{idx}.wav"
+                        
                         try:
                            frames = webrtc_ctx.audio_receiver.get_frames(timeout=1)
                         except Exception as e:
                            st.error(f"⚠️ Audio capture error: {e}")
                            frames = []
+                            
                         if frames:
                            try:
                                pcm = np.concatenate([f.to_ndarray() for f in frames], axis=0)