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