diff --git a/tf_adapter/python/npu_bridge/estimator/npu/npu_estimator.py b/tf_adapter/python/npu_bridge/estimator/npu/npu_estimator.py
index a06b9a38c93f0ec3afb1daafe708e26d775d845a..44f1b8ab158673569c579a7797914f3915bb2a9f 100644
--- a/tf_adapter/python/npu_bridge/estimator/npu/npu_estimator.py
+++ b/tf_adapter/python/npu_bridge/estimator/npu/npu_estimator.py
@@ -377,7 +377,9 @@ class NPUEstimator(estimator_lib.Estimator):
         config = self.__load_graph_optimizers(config)
 
         # Init npu system: get task and device info from configuration file.
-        self.__load_job_info(job_start_file)
+        if !(self.__load_job_info(job_start_file)):
+            raise ValueError(
+                '`config` must be provided with type `NPUConfigs`')
 
         # Check modie dir in NPUEstimator and NPURunConfig
         model_dir = self.__check_model_dir(model_dir, config)