Update app.py

app.py

@@ -30,7 +30,7 @@ class ClassificationResponse(BaseModel):
 class HuggingFaceInferenceClient:
     def __init__(self, model_name: str = "meta-llama/Meta-Llama-3-8B-Instruct", api_token: str = None):
         self.model_name = model_name
-        self.api_token = api_token or ""
+        self.api_token = api_token or os.getenv("HF_API_TOKEN")
         if not self.api_token:
             raise ValueError("Hugging Face API token not provided")
         self.headers = {