Featured Imaged not displaying in product page.

I am working on a website: houseofroxie.com

I am using Maya Shop template

I am also using the woocommerce plugin.

My issue is on the product page. When I set the featured image, a black box shows up instead of the photo I set as the image. In the shop page, where all the products are displayed, the image show up fine. But in the individual product page, I just get a black box that covers the details of the product.

I have been searching for fixes but to no avail.

Please help.