Catchable fatal error: Argument 1 passed to AppBundle\Controller\Course\CourseSetController::getTagIdsByCourseSet() must be of the type array, null given, called in /home/wwwroot/myinhe.com/src/AppBundle/Controller/Course/CourseSetController.php on line 127 and defined in /home/wwwroot/myinhe.com/src/AppBundle/Controller/Course/CourseSetController.php on line 146