Update main.py

main.py

@@ -22,7 +22,7 @@ logger = logging.getLogger(__name__)
 app = FastAPI()
 load_dotenv()
 HF_TOKEN = os.getenv("HF_TOKEN")
-
+assert HF_TOKEN
 os.environ["HF_HUB_ENABLE_HF_TRANSFER"] = "1"
 
 FASTTEXT_PREFIX_LENGTH = 9  # fasttext labels are formatted like "__label__eng_Latn"