Catchable fatal error: Argument 1 passed to AppBundle\Controller\Course\CourseSetController::getTagIdsByCourseSet() must be of the type array, null given, called in D:\PHP\edusoho\src\AppBundle\Controller\Course\CourseSetController.php on line 115 and defined in D:\PHP\edusoho\src\AppBundle\Controller\Course\CourseSetController.php on line 161