Update app.py

app.py

@@ -287,9 +287,12 @@ with gr.Blocks(title="Audit Q&A", css= "style.css", theme=theme,elem_id = "main-
                 - **This is just a prototype and being tested and worked upon, so its not perfect and may sometimes give irrelevant answers**. If you are not satisfied with the answer, please ask a more specific question or report your feedback to help us improve the system.
                 """)
 
+    # using event listeners
+    # https://www.gradio.app/docs/gradio/textbox#event-listeners-arguments
     (textbox
      .submit(start_chat, [textbox,chatbot], [textbox,tabs,chatbot],queue = False,api_name = "start_chat_textbox")
-     .then(chat, [textbox,chatbot, dropdown_sources,dropdown_reports], [chatbot,sources_textbox],concurrency_limit = 8,api_name = "chat_textbox"))
+     .then(chat, [textbox,chatbot, dropdown_sources,dropdown_reports], [chatbot,sources_textbox],concurrency_limit = 8,api_name = "chat_textbox")
+     .then(finish_chat, None, [textbox],api_name = "finish_chat_textbox"))
     
     demo.queue()