Fatal error: Uncaught Error: Class "OOUIHTMLForm" not found in /var/www/html/orian-wiki/includes/specials/forms/EditWatchlistNormalHTMLForm.php:24
Stack trace:
#0 {main}
thrown in /var/www/html/orian-wiki/includes/specials/forms/EditWatchlistNormalHTMLForm.php on line 24