Update app.py

app.py

@@ -95,7 +95,7 @@ def ui():
                 with st.form(key='my_form', clear_on_submit=True):
                     audio_file = audiorecorder("Click to record", "Recording...")
                     wav_file = open("./output_audio.mp3", "wb")
-                    wav_file.write(audio.tobytes())
+                    wav_file.write(audio_file.tobytes())
                     submit_button = st.form_submit_button(label='Send')
                 if submit_button and audio_file:
                     output_file_path = "./output_audio.mp3"