Fatal error: Uncaught Error: Call to undefined function get_the_ID() in /home3/mercatri/public_html/wp-content/plugins/tutor-pro/templates/single/course/enrolled/gradebook.php:11 Stack trace: #0 {main} thrown in /home3/mercatri/public_html/wp-content/plugins/tutor-pro/templates/single/course/enrolled/gradebook.php on line 11