Update app.py

app.py

@@ -185,10 +185,10 @@ def start_test(student_id, state):
     # ✅ startログ：actions列に "start test pushed" を入れる
     log_event(
         state,
-        question_number=1,
-        reading_level=level,
-        passage_id=passage_id,
-        question=question,
+        question_number=None,
+        reading_level=None,
+        passage_id=None,
+        question=None,
         choice=None,
         correct=None,
         actions="start test pushed",