Fatal error: Uncaught Error: Call to undefined method appclient_model_course_startcourse::redirectAndExit() in /var/www/html/appclient/model/course/startcourse.php:93 Stack trace: #0 /var/www/html/appclient/controller/course.php(45): appclient_model_course_startcourse->render('course', 'discoverskills_...', 'course', 'courseimage', true) #1 /var/www/html/common/utils/frontcontroller.php(172): appclient_controller_course->index('discoverskills_...', 'course', 'courseimage', '21', NULL, NULL, NULL, NULL, NULL, NULL) #2 /var/www/html/htdocs/client/index.php(16): common_utils_frontcontroller::dispatch('appclient') #3 {main} thrown in /var/www/html/appclient/model/course/startcourse.php on line 93