Update app.py

app.py

@@ -18,6 +18,8 @@ from langchain.prompts import PromptTemplate
 from langchain.chains import RetrievalQA
 from langchain.chains.conversation.memory import ConversationBufferWindowMemory
 from langchain.agents import Tool, initialize_agent
+from huggingface_hub import login
+login()
 
 # Set up logging
 logging.basicConfig(level=logging.DEBUG)