Fatal error: Uncaught Error: Class 'TUTOR\Input' not found in /home/trazuruy/public_html/wp-content/plugins/tutor-pro/addons/gradebook/views/pages/grade_book.php:15 Stack trace: #0 {main} thrown in /home/trazuruy/public_html/wp-content/plugins/tutor-pro/addons/gradebook/views/pages/grade_book.php on line 15