Update app.py

app.py

@@ -90,7 +90,7 @@ def user_ask(state, chatbot1, chatbot2, textbox):
 
     # Updating state with the current ELO ratings
     state["elo_ratings"] = read_elo_ratings()
-    state["history"].extend([]
+    state["history"].extend([
         {"role": "user", "content": user_input}])
     # Chat with bots
     bot1_response, bot2_response = chat_with_bots(user_input, state)