diff --git a/rdagent/scenarios/qlib/task_generator/feedback.py b/rdagent/scenarios/qlib/task_generator/feedback.py
index c6dd57454..a18145edf 100644
--- a/rdagent/scenarios/qlib/task_generator/feedback.py
+++ b/rdagent/scenarios/qlib/task_generator/feedback.py
@@ -78,6 +78,7 @@ def generateFeedback(self, exp: Experiment, hypothesis: Hypothesis, trace: Trace
             return hypothesis_feedback
 
         except json.JSONDecodeError as e:
+            # TODO:  (Xiao) I think raising a specific type of ERROR to make caller know sth bad has happend would be more reasonable
             print("Error parsing JSON response from LLM for hypothesis feedback:", e)
         except Exception as e:
             print("An unexpected error occurred while generating hypothesis feedback:", e)