Update app.py

app.py

@@ -9,7 +9,7 @@ from langchain.memory import ConversationBufferMemory as MEM,RedisChatMessageHis
 from langchain.schema import SystemMessage as SM,HumanMessage as HM, AIMessage as AM
 from langchain import hub
 import os
-
+import torch
 
 import importlib.util
 import logging