Fatal error: Uncaught Error: Class "HTMLPurifier_AttrDef" not found in /home/edepracl/public_html/moodle30/lib/htmlpurifier/HTMLPurifier/AttrDef/URI/IPv4.php:7 Stack trace: #0 {main} thrown in /home/edepracl/public_html/moodle30/lib/htmlpurifier/HTMLPurifier/AttrDef/URI/IPv4.php on line 7