SINGLE M14 MAG POUCH WITH DSA-100 CODE PRE-1966

Fatal error: Uncaught Error: Call to undefined method Avada_Layout::add_class() in /home/xsrcdywgg4u4/public_html/test.doughboymilitary.com/wp-content/themes/avada-child/single-avada_portfolio.php:18 Stack trace: #0 /home/xsrcdywgg4u4/public_html/test.doughboymilitary.com/wp-includes/template-loader.php(106): include() #1 /home/xsrcdywgg4u4/public_html/test.doughboymilitary.com/wp-blog-header.php(19): require_once('/home/xsrcdywgg...') #2 /home/xsrcdywgg4u4/public_html/test.doughboymilitary.com/index.php(17): require('/home/xsrcdywgg...') #3 {main} thrown in /home/xsrcdywgg4u4/public_html/test.doughboymilitary.com/wp-content/themes/avada-child/single-avada_portfolio.php on line 18