If you can't use wp_logout_url()
function, You can turn off this validation using this code:
add_action('check_admin_referer', 'logout_without_confirm', 10, 2);
function logout_without_confirm($action, $result)
{
/**
* Allow logout without confirmation
*/
if ($action == "log-out" && !isset($_GET['_wpnonce'])) {
$redirect_to = isset($_REQUEST['redirect_to']) ? $_REQUEST['redirect_to'] : 'url-you-want-to-redirect';
$location = str_replace('&', '&', wp_logout_url($redirect_to));
header("Location: $location");
die;
}
}
Replace 'url-you-want-to-redirect'
with the URL you want to redirect after logout.
Add it in your functions.php