Been diving into the Udesly WP templates. Blog / Categories and Tags.
I think there’s a kind of typo in the parent element for the Categories tags COPY THIS div.
The Copy This block is not actually you want to copy as long as it’s not the parent of the categories element.
See on screenshot.
I think Webflow doesn’t give support for these kinds of tools and if the template comes from Udesly maybe contacting them directly would be the best way to go.