Fatal error: Uncaught Error: Class 'HTMLPurifier_ChildDef' not found in /home/aefn/public_html/moodle/lib/htmlpurifier/HTMLPurifier/ChildDef/Custom.php:9 Stack trace: #0 {main} thrown in /home/aefn/public_html/moodle/lib/htmlpurifier/HTMLPurifier/ChildDef/Custom.php on line 9