Update app.py

app.py

@@ -5,6 +5,7 @@ from langchain.agents.output_parsers import ReActJsonSingleInputOutputParser
 from langchain.tools.render import render_text_description
 from langchain_community.llms import HuggingFaceHub
 from langchain_community.utilities import SerpAPIWrapper
+from langchain_community.chat_models.huggingface import ChatHuggingFace
 import chainlit as cl
 
 # Instantiate the LLM