Update app.py

app.py

@@ -1,5 +1,6 @@
 # pip install streamlit langchain lanchain-openai beautifulsoup4 python-dotenv chromadb
 
+import os
 import streamlit as st
 from langchain_core.messages import AIMessage, HumanMessage
 from langchain_community.document_loaders import WebBaseLoader
@@ -14,8 +15,7 @@ from langchain.chains import create_history_aware_retriever, create_retrieval_ch
 from langchain.chains.combine_documents import create_stuff_documents_chain
 
 
-load_dotenv()
-
+os.getenv('HUGGINGFACEHUB_API_TOKEN')
 def get_vectorstore_from_url(url):
     # get the text in document form
     loader = WebBaseLoader(url)