Update app.py

app.py

@@ -7,7 +7,7 @@ from abc import ABC, abstractmethod
 
 import gradio as gr
 from dotenv import load_dotenv
-from langchain.llms import HuggingFaceHub
+from langchain_community.llms import HuggingFaceHub
 from langchain.agents import initialize_agent, AgentType
 from langchain.chains import LLMChain
 from langchain.prompts import PromptTemplate