Update app.py

app.py

@@ -89,7 +89,7 @@ examples = [["what is your contact number?"], ["where you are currently working?
 #  return chain.run(input_documents=documents, question="answer as if person responding. do not ask question back. \n Question: "+query1)
 
 list_greet = ["hi","hey","yo"]
-def greet(query1):
+def greet(query1,history):
   try:
     if query1.lower() in list_greet:
       return "Hello. How can I assist you today?"