Update app.py

app.py

@@ -28,7 +28,13 @@ logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)
 
 # Get HF token from environment
-HF_TOKEN = os.getenv('HF_TOKEN')
+HF_TOKEN = os.getenv('hf_token')
+
+if HF_TOKEN is None:
+    logger.error("FATAL ERROR: HuggingFace token (HF_TOKEN) environment variable is not set.")
+    logger.error("Please set the HF_TOKEN environment variable before running the application.")
+    sys.exit("HuggingFace token (HF_TOKEN) is not set. Exiting.")
+
 
 # MCP Message Structure
 @dataclass