Blank Page – Buddy Lets Go

Fatal error: Uncaught Error: Call to undefined function wp_get_nav_menu_object() in /var/www/buddyletsgoph.com/public_html/wp-includes/nav-menu-template.php:125 Stack trace: #0 /var/www/buddyletsgoph.com/public_html/wp-content/plugins/gp-premium/menu-plus/functions/generate-menu-plus.php(1060): wp_nav_menu(Object(stdClass)) #1 /var/www/buddyletsgoph.com/public_html/wp-includes/class-wp-hook.php(287): generate_menu_plus_mobile_header('') #2 /var/www/buddyletsgoph.com/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array) #3 /var/www/buddyletsgoph.com/public_html/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #4 /var/www/buddyletsgoph.com/public_html/wp-content/themes/generatepress/header.php(56): do_action('generate_after_...') #5 /var/www/buddyletsgoph.com/public_html/wp-includes/template.php(730): require_once('/var/www/buddyl...') #6 /var/www/buddyletsgoph.com/public_html/wp-includes/template.php(676): load_template('/var/www/buddyl...', true, Array) #7 /var/www/buddyletsgoph.com/publi in /var/www/buddyletsgoph.com/public_html/wp-includes/nav-menu-template.php on line 125