fix

app.py

@@ -13,15 +13,26 @@ from pydantic import BaseModel, Field, HttpUrl
 from TTS.api import TTS
 
 SPACE_API_KEY = os.getenv("SPACE_API_KEY")
+HF_TOKEN = (
+    os.getenv("HUGGING_FACE_HUB_TOKEN")
+    or os.getenv("HUGGINGFACEHUB_API_TOKEN")
+    or os.getenv("HF_TOKEN")
+)
+MODEL_NAME = "tts_models/multilingual/multi-dataset/xtts_v2"
 MAX_TEXT_LENGTH = 1000
 DEFAULT_LANGUAGE = "en"
 
 DEVICE = "cuda" if torch.cuda.is_available() else "cpu"
 
 try:
-    tts_model = TTS("tts_models/multilingual/multi-dataset/xtts_v2", gpu=DEVICE == "cuda")
+    if HF_TOKEN:
+        os.environ.setdefault("HUGGING_FACE_HUB_TOKEN", HF_TOKEN)
+    tts_model = TTS(MODEL_NAME, gpu=DEVICE == "cuda", progress_bar=False)
 except Exception as exc:  # pragma: no cover
-    raise RuntimeError(f"Failed to load XTTS v2 model: {exc}") from exc
+    hint = ""
+    if "EOF when reading a line" in str(exc):
+        hint = " Hint: set HUGGING_FACE_HUB_TOKEN to a Hugging Face token that has accepted the XTTS v2 license."
+    raise RuntimeError(f"Failed to load XTTS v2 model: {exc}.{hint}") from exc
 
 app = FastAPI(title="xtts-v2-api", version="1.0.0")