Based on the element "Product-Box" I created my own element and the corresponding storefront-template. I only changed the names in the index.js.
In the backend, the data of the selected product is also correctly displayed and stored. But in the frontend I do not see any product. If I dump() the data in the storefront-template, the value data = null.
With the default product box element it works fine.
Does anybody have an idea what could be the reason for this?