fix bugs

app/__init__.py

@@ -218,7 +218,7 @@ def celery_init_app(app: Flask) -> Celery:
     celery_app.conf.beat_schedule = {
         "check-activity-help-link": {
             "task": "app.task.check_activity_help_link",
-            "schedule": crontab(hour=20, minute=02),
+            "schedule": crontab(hour=20, minute=4),
         },
     }