Hi, I just got your plugin and have an issue, wherever I try to add on the page dosen’t show on the product and on the page I get this error that could not call a function in wherever I try to insert.

Fatal error: Call to a member function is_on_sale() on a non-object in /Users/chrys/Sites/curson/www/wp-content/themes/flatsome/woocommerce/single-product/sale-flash.php on line 23

I’m using flatsome theme.
Thank You