Fatal error: Uncaught Error: Class 'core_question\bank\action_column_base' not found in /home/cfaeatb/public_html/moodle/question/classes/bank/copy_action_column.php:26 Stack trace: #0 {main} thrown in /home/cfaeatb/public_html/moodle/question/classes/bank/copy_action_column.php on line 26