Fatal error: Uncaught Error: Class "HTMLPurifier_Lexer_DOMLex" not found in /var/www/erp/office/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/PH5P.php:13 Stack trace: #0 {main} thrown in /var/www/erp/office/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Lexer/PH5P.php on line 13