Fatal error after latest update

This filter now suddenly breaks the site with this fatal error in PHP… it was working fine before update?

PHP Fatal error: Uncaught ArgumentCountError: Too few arguments to function displaystockestimatedate(), 1 passed in /…../wp-includes/class-wp-hook.php on line 288 and exactly 2 expected in /…../wp-content/themes/storefront-child/functions.php:128

add_filter('woocommerce_get_stock_html','displaystockestimatedate');
function displaystockestimatedate($existing,$product){

	$productid=get_the_ID();
	if(is_singular('product')){
		if(get_post_meta($productid,'_estimated_backorder_available_date',true) != ""){
			$output = $existing."<div class=\"backorderestimateavailability\">".get_post_meta($productid,"_estimated_backorder_available_date",true)."</div>";
		}else{
			$output = $existing;
		}
		return $output;
	}else{
		return $existing;
	}
}

• This topic was modified 5 years, 7 months ago by 1callservice.