Update app.py

app.py

@@ -18,6 +18,8 @@ from langchain.chains import ConversationalRetrievalChain
 from htmlTemplates import css, bot_template, user_template
 from langchain.llms import HuggingFaceHub
 
+# set this key as an environment variable
+os.environ["HUGGINGFACEHUB_API_TOKEN"] = st.secrets['huggingface_token']
 
 def get_pdf_text(pdf_docs):
     """
@@ -151,8 +153,7 @@ def main():
 
     st.write(css, unsafe_allow_html=True)
 
-    # set this key as an environment variable
-    os.environ["HUGGINGFACEHUB_API_TOKEN"] = huggingface_token
+
 
     if "conversation" not in st.session_state:
         st.session_state.conversation = None