Update app.py

app.py

@@ -30,8 +30,12 @@ CHUNK_SIZE = 800
 OVERLAP = 200
 EMBEDDING_BATCH_SIZE = 32  # Batch size for embedding API calls
 
-# Login to Hugging Face Hub
-login(token="llama3")
+hf_token = os.environ.get('HF_TOKEN')
+if hf_token:
+    login(token=hf_token)
+else:
+    raise ValueError("Hugging Face token not found in environment variables")
+
 
 # Initialize models
 embedding_model = SentenceTransformer(embedding_model_name)