Update app.py

app.py

@@ -211,7 +211,7 @@ async def validate_model(
         model_path = MODEL_SAVE_DIR / f"{model_name}.pkl"
         if not model_path.exists():
             raise HTTPException(status_code=404, detail="XGB model file not found")
-        model = TfidfXGB(label_encoders)
+        model = TfidfXGBoost(label_encoders)
         model.load_model(model_name)
         X = data_df[TEXT_COLUMN]
         y = data_df[LABEL_COLUMNS]