fixed history

app.py

@@ -24,7 +24,7 @@ template_html = env.get_template('template_html.j2')
 def add_text(text, history):
     history = [] if history is None else history
     history = history + [(text, None)]
-    return gr.Textbox(value="", interactive=False), gr.Textbox(value="", interactive=False), gr.Textbox(value="", interactive=False), history
+    return history, gr.Textbox(value="", interactive=False)
 
 
 def turn_on_activity():
@@ -37,6 +37,8 @@ def bot(history):
     if not user_query:
         raise gr.Warning("Please submit a non-empty string")
 
+    logger.info('Retrieving documents...')
+
     retrieve_query = define_query(user_query, chat_model)
     documents = faiss_index.similarity_search(retrieve_query) if retrieve_query else ''
     user_prompt = USER_PROMPT(user_query, documents)
@@ -78,7 +80,7 @@ with (gr.Blocks() as demo):
         bot, [chatbot], [chatbot, prompt_html]
     )
 
-    txt_msg.then(turn_on_activity, None, [txt], queue=False)
+    txt_msg.then(lambda: gr.Textbox(interactive=True), None, [txt], queue=False)
 
     txt_msg = txt.submit(
         add_text, [txt, chatbot], [txt, chatbot], queue=False
@@ -86,7 +88,7 @@ with (gr.Blocks() as demo):
         bot, [chatbot], [chatbot, prompt_html]
     )
 
-    txt_msg.then(turn_on_activity, None, [txt], queue=False)
+    txt_msg.then(lambda: gr.Textbox(interactive=True), None, [txt], queue=False)
 
 demo.queue()
 demo.launch(debug=True)