Update app.py

app.py

@@ -15,6 +15,13 @@ from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.schema import Document
 from langchain import HuggingFacePipeline
 
+api_key=os.getenv("api_key")
+
+try:
+    login(token=api_key)
+except Exception as e:
+    print(f"Login failed: {e}")
+
 # ------------------------------
 # Device setup
 # ------------------------------