Update app.py

app.py

@@ -9,7 +9,11 @@ from langchain_community.llms import HuggingFaceHub
 from huggingface_hub import login
 
 # 1. Authentication (MUST HAVE)
-login(token=os.environ.get('HF_TOKEN'))
+from huggingface_hub import login
+import os
+
+def create_qa_system():
+    login(token=os.environ.get('HF_TOKEN'))  # Safe method
 
 # 2. PDF Processing Function
 def create_qa_system():