Update app.py

app.py

@@ -53,7 +53,8 @@ with gr.Blocks(css="") as demo:
                 chat_input = gr.Textbox(show_label=False, placeholder="Enter text...").style(container=False)
             with gr.Column(min_width=50, scale=1):
                 chat_submit_btn = gr.Button("🚀", variant="primary")
-                
+
+    index_select = []
     chat_input.submit(chat_ai, [index_select, chat_input, prompt_tmpl, refine_tmpl, sim_k, chat_tone, chat_context, chatbot, search_options_checkbox], [chat_context, chatbot])
     chat_input.submit(reset_textbox, [], [chat_input])
     chat_submit_btn.click(chat_ai, [index_select, chat_input, prompt_tmpl, refine_tmpl, sim_k, chat_tone, chat_context, chatbot, search_options_checkbox], [chat_context, chatbot])