diff --git a/ielts_be/services/impl/training/kb.py b/ielts_be/services/impl/training/kb.py
index 77a79b4..c2a8fa3 100644
--- a/ielts_be/services/impl/training/kb.py
+++ b/ielts_be/services/impl/training/kb.py
@@ -16,8 +16,8 @@ class TrainingContentKnowledgeBase(IKnowledgeBase):
         self._tips = None  # self._read_json(path)
         self._category_metadata = None
         self._indices = None
-        self.load_indices_and_metadata()
         self._logger = getLogger(__name__)
+        self.load_indices_and_metadata()
 
     @staticmethod
     def _read_json(path: str) -> Dict[str, any]: