Update app.py

app.py

@@ -80,7 +80,7 @@ with gr.Blocks(css="footer {visibility: hidden}") as demo:
             download_button = gr.DownloadButton(label="Download Audio", value=None, visible=True)
             error_box = gr.Textbox(label="WARNING", value="Input box cannot be blank!!", visible=False, container=True)
             
-    download_button.click(download_file, file_path, download_button)
+    download_button.click(download_file, audio_output, download_button)
     btn_clear.add(audio_output)
     btn.click(text_to_speech, inputs=[text_input, audio_input_mic, audio_input_file], outputs=audio_output)
     btn.click(show_error, text_input, [error_box, audio_output])