Update app.py

app.py

@@ -27,7 +27,8 @@ from langchain_experimental.agents.agent_toolkits import create_csv_agent
 # from langchain.agents import ZeroShotAgent, Tool, AgentExecutor
 from langchain.agents.agent_types import AgentType
 # from langchain.agents import create_csv_agent
-from langchain_community.llms import OpenAI, LLMChain
+from langchain_community.llms import OpenAI
+from langchain.chains import LLMChain
 from openai import AzureOpenAI
 
 class ChatDocumentQA: