Event observer 'quiz_group_observer::course_reset_ended' throws a warning in higher version Moodle

It would be great if you could lift up quiz_group to Moodle 4.5.

Exception encountered in event observer 'quiz_group_observer::course_reset_ended': Warning: Undefined array key "reset_gradebook-grades" in …/mod/quiz/report/group/classes/observer.php on line 202