I am trying to set up a configurable product but all I get when I click on the product is a completely blank page. No header, etc, nothing. View Source shows no code is output at all. What could be causing this? Here is the url to the configurable product: https://www.design-a-cake.co.uk/photocake.html https://www.design-a-cake.co.uk/photocake-edible-cake-topper-pumpkin-lanterns.html Thank you.