Just installed release 2.3.2, assignments get error when submitting grade. Also, in the block setting all teachers courses appear but when unhidden not all of them show up in marking?

Apache error log

Call to undefined function get_grading_manager() in /var/www/html/students/blocks/ajax_marking/modules/assignment/block_ajax_marking_assignment.class.php on line 235, referer:

thanks for any help! Teachers love this block.