Not working on 4.0.1

It’s working in 4.1.1 add this in your function.php

//show featured image  product category catalogue
add_action( 'woocommerce_archive_description', 'woocommerce_category_image', 2 );

function woocommerce_category_image() {
    if ( is_product_category() ){
	    wcb_show_category_banner();
	}
}

but there’s a bug going on in the dashboard page when you try to add banner, it sometimes overlaps with the category thumbnail. So you need to save the thumbnail first then the banner.