Either "offers", "review", or "aggregateRating" should be specified

I Just switched my site over to a wordpress WooCommerce platform. https://swordsofhonor.com.

Today google sends me this message:
Either "offers", "review", or "aggregateRating" should be specified

on this page - https://swordsofhonor.com/product-category/die-hobby-stone/
This is a 'category' page with 2 items on it. I have no idea what the error message means or how to fix it.

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