Catchable fatal error: Argument 1 passed to AppBundle\Controller\Course\CourseSetController::getTagIdsByCourseSet() must be of the type array, null given, called in /www/wwwroot/edu.dagaibian.cn/src/AppBundle/Controller/Course/CourseSetController.php on line 113 and defined in /www/wwwroot/edu.dagaibian.cn/src/AppBundle/Controller/Course/CourseSetController.php on line 159