Update app.py

app.py

@@ -5,7 +5,7 @@ from decouple import Config
 
 def query_vectara(question, chat_history):
     # Get the user's message from the chat history
-    user_message = chat_history[-1][0]
+    # user_message = chat_history[-1][0]
 
     # Query Vectara API
     customer_id = config('CUSTOMER_ID')  # Read from .env file