Updated Enfold and Now Get Fatal error:

I updated the Enfold theme and now the site is down. Please help ASAP.

Fatal error: Call to undefined function avia_get_option() in /home/url (see below for url) /public_html/wp-content/themes/enfold-child/header.php on line 5

This is the code in the child theme header: <?php
global $avia_config;

$style = $avia_config[‘box_class’];
$responsive = avia_get_option(‘responsive_active’) != “disabled” ? “responsive” : “fixed_layout”;
$blank = isset($avia_config[‘template’]) ? $avia_config[‘template’] : “”;
$av_lightbox = avia_get_option(‘lightbox_active’) != “disabled” ? ‘av-default-lightbox’ : ‘av-custom-lightbox’;
$preloader = avia_get_option(‘preloader’) == “preloader” ? ‘av-preloader-active av-preloader-enabled’ : ‘av-preloader-disabled’;
$sidebar_styling = avia_get_option(‘sidebar_styling’);
?>