Update app.py

app.py

@@ -130,7 +130,7 @@ def generate_response(prompt):
         #response = chat_engine.chat_repl(messages)
         string_message=str(messages)
         #response = query_engine.query(string_message)
-        response = chat_engine.chat(prompt, chat_history=custom_chat_history)
+        response = chat_engine.chat(prompt, chat_history)
         string_response=str(response)
         custom_chat_history.append("Human: "+prompt+"Assistant: "+string_response)        
         #Optional[List[ChatMessage]] = None) → Union[Response, StreamingResponse]
@@ -142,7 +142,7 @@ def generate_response(prompt):
         print("below is history")
         print(chat_history)
         print("below is type")
-        print(type(chat_history))
+        print(type(custom_chat_history))
         type(chat_history)
         return response.response