Fatal error: Uncaught Error: Call to undefined method Avada_Layout::add_class() in /www/wp-content/themes/Avada-Child-Theme/custom-form.php:19
Stack trace:
#0 /www/wp-includes/template-loader.php(106): include()
#1 /www/wp-blog-header.php(19): require_once('/www/wp-include...')
#2 /www/index.php(17): require('/www/wp-blog-he...')
#3 {main}
thrown in /www/wp-content/themes/Avada-Child-Theme/custom-form.php on line 19