Update app.py

app.py

@@ -7,7 +7,7 @@ from langchain_core.prompts import PromptTemplate
 from sentence_transformers import SentenceTransformer
 
 # Retrieve HF_TOKEN from environment
-HF_TOKEN = os.getenv("HF_TOKEN")
+HF_TOKEN = os.environ.get("HF_TOKEN")
 
 # Constants
 DATA_PATH = "dataFolder/"