Update Chat_with_pdf_LLM.py

Chat_with_pdf_LLM.py

@@ -8,6 +8,7 @@ from langchain.llms import OpenAI
 from langchain.callbacks import get_openai_callback
 import os
 from streamlit_chat import message
+from langchain import HuggingFaceHub
 
 def LLM_pdf(model_name = 'google/flan-t5-large'):
     # st.header("Ask your PDF 💬")