Update app.py

app.py

@@ -1577,7 +1577,7 @@ with gr.Blocks(theme='gradio/soft') as demo:
             # gr.Markdown("<h1 style='color: red;'>Talk to RADAR</h1>", elem_id="voice-markdown")
 
             chat_input = gr.Textbox(show_copy_button=True, interactive=True, show_label=False, label="ASK Radar !!!")
-            tts_choice = gr.Radio(label="Select TTS System", choices=["Alpha", "Beta"], value="Alpha",,interactive=False,visible=False)
+            tts_choice = gr.Radio(label="Select TTS System", choices=["Alpha", "Beta"], value="Alpha",interactive=False,visible=False)
         
             retriever_button = gr.Button("Retriever")