Update app.py

app.py

@@ -259,7 +259,7 @@ def conversation(qa_chain, message, history):
     #print("formatted_chat_history",formatted_chat_history)
    
     # Generate response using QA chain
-    response = qa_chain({"question": message, "chat_history": formatted_chat_history)
+    response = qa_chain({"question": message, "chat_history": formatted_chat_history})
     response_answer = response["answer"]
     if response_answer.find("Helpful Answer:") != -1:
         response_answer = response_answer.split("Helpful Answer:")[-1]