Default Lightbox not working

Hello please check https://expresscasket.com/shop/stainless-steel-caskets/bates-rose-pink-shaded-silver/

you can see that product lightbox is not working, I have added following code to functions.php file, still issue

add_theme_support( ‘wc-product-gallery-zoom’ );
add_theme_support( ‘wc-product-gallery-lightbox’ );
add_theme_support( ‘wc-product-gallery-slider’ );

what can be the solution?

Woocommerce version – 3.0.7