It’s not an error message. The first few lines of code are:
ion auth_redirect() { // Checks if a user is logged in, if not redirects them to the login page if ( (!empty($_COOKIE[USER_COOKIE]) && !wp_login($_COOKIE[USER_COOKIE], $_COOKIE[PASS_COOKIE], true)) || (empty($_COOKIE[USER_COOKIE])) ) { nocache_headers(); wp_redirect(get_option(‘siteurl’) . ‘/wp-login.php?redirect_to=’ . urlencode($_SERVER[‘REQUEST_URI’])); exit(); } } endif; if ( !function_exists(‘check_admin_referer’) ) : function check_admin_referer($action = -1) { $adminurl = strtolower(get_option(‘siteurl’)).’/wp-admin’; $referer = strtolower(wp_get_referer()); if ( !wp_verify_nonce($_REQUEST[‘_wpnonce’], $action) && !(-1 == $action && strpos($referer, $adminurl) !== false)) { wp_nonce_ays($action); die(); } do_action(‘check_admin_referer’, $action); }endif; if ( !function_exists(‘check_ajax_referer’) ) : function check_ajax_referer() { $cookie = explode
…and it goes about for probably another 150 lines or so.