Try new WC secondary image function

gistfile1.txt

function generatepress_wc_secondary_product_image() {
	$post_type = get_post_type( get_the_ID() );
  
	if ( 'product' == $post_type && method_exists( 'WC_Product', 'get_gallery_image_ids' ) ) {
		$product = new WC_Product( get_the_ID() );
		$attachment_ids = $product->get_gallery_image_ids();
  
		if ( $attachment_ids && generatepress_wc_get_setting( 'product_secondary_image' ) && generatepress_wc_get_setting( 'product_archive_image' ) && has_post_thumbnail() ) {
			$secondary_image_id = $attachment_ids['0'];
			echo wp_get_attachment_image( $secondary_image_id, 'shop_catalog', '', $attr = array( 'class' => 'secondary-image attachment-shop-catalog' ) );
		}
	}
}