Issue: Undefined class constant 'SUCESS'

Error: Undefined class constant 'SUCESS' - library/vw/XenForo/ControllerAdmin/User.php:45
Generated By: Alfa, A moment ago

Stack Trace
#0 /library/XenForo/FrontController.php(369): vw_XenForo_ControllerAdmin_User->actionManageWikiWatch()
#1 /library/XenForo/FrontController.php(152): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#2 /admin.php(13): XenForo_FrontController->run()
#3 {main}
Request State
array(3) {
["url"] => string(75) "https://my-forum.com/admin.php?users/hee-man420.416981/manage-wiki-watch"
["_GET"] => array(1) {
["users/hee-man420_416981/manage-wiki-watch"] => string(0) ""
}
["_POST"] => array(3) {
["act"] => string(14) "watch_no_email"
["_xfConfirm"] => string(1) "1"
["_xfToken"] => string(8) "********"
}
}