After last update i cannot use variable product.
When i press add to cart button nothing happed and the following error exist at woocommerce.
How to fix it?
2021-01-06T05:48:37+00:00 CRITICAL Uncaught Error: Call to undefined method WC_AJAX::json_headers() in /var/www/vhosts/dreamhome.com.gr/shop2.dreamhome.com.gr/wp-content/themes/xstore/framework/woo.php:2575
Stack trace:
#0 /var/www/vhosts/dreamhome.com.gr/shop2.dreamhome.com.gr/wp-includes/class-wp-hook.php(287): etheme_svp_cart()
#1 /var/www/vhosts/dreamhome.com.gr/shop2.dreamhome.com.gr/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters()
#2 /var/www/vhosts/dreamhome.com.gr/shop2.dreamhome.com.gr/wp-includes/plugin.php(484): WP_Hook->do_action()
#3 /var/www/vhosts/dreamhome.com.gr/shop2.dreamhome.com.gr/wp-admin/admin-ajax.php(184): do_action()
#4 {main}
thrown μέσα στο /var/www/vhosts/dreamhome.com.gr/shop2.dreamhome.com.gr/wp-content/themes/xstore/framework/woo.php στην γραμμή 2575
