Fix 404 errors: Update to new Inference Providers API endpoint (router.huggingface.co/hf-inference)

app.py

@@ -10,7 +10,7 @@ from dotenv import load_dotenv
 load_dotenv()
 
 # Configuration
-API_BASE = "https://api-inference.huggingface.co/models/"
+API_BASE = "https://router.huggingface.co/hf-inference/models/"
 MODEL_ID = "openai-community/gpt2"
 HF_TOKEN = os.getenv('HF_NEXT_TOKEN_PREDICTOR_TOKEN', '')