Fatal error: Uncaught Error: Class "HTMLPurifier_AttrDef_URI_Email" not found in /srv/www/htdocs/moodle/lib/htmlpurifier/HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php:7 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/htmlpurifier/HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php on line 7