add hf token

.gitignore

@@ -1,3 +1,6 @@
+__pycache__
+
 data
 env
-model
+model
+.env

app.py

@@ -1,8 +1,17 @@
+import os
+
 import streamlit as st
 
+# load environment variables
+from dotenv import load_dotenv
+from huggingface_hub import login
+
 import utils
 from build_model import load_model
 
+load_dotenv()
+login(token=os.getenv("HUGGINGFACE_TOKEN"))
+
 st.title("Buzzbot")
 
 # Initialize retriever and model
@@ -21,7 +30,7 @@ if "messages" not in st.session_state:
 for message in st.session_state.messages:
     with st.chat_message(message["role"]):
         st.markdown(message["content"])
-        if message['role']=="assistant":
+        if message["role"] == "assistant":
             st.caption(message["source_docs"])
 
 # Accept user input