Why am I seeing the error 'Shipping template does not exist' when publishing some of my products?

Why am I seeing the error 'Shipping template does not exist' when publishing some of my products?

This error occurs when the Shipping template you created in the app has been deleted from Etsy. To resolve this, create a new Shipping template if the old one was deleted, assign it in the Profile, and then try publishing the product on Etsy again.