Can't see yoast "isPrimary" edge for post categories.

[AndrzejBaran]

Using Gatsby.JS with GraphQL. I can see all nodes for seo, but edges are not showing, so I can't grab isPrimary. My query looks like this:

query getPost {
  wpPost(databaseId: {eq: 12}) {
    categories {
      edges {
        isPrimary
      }
      nodes {
        link
        name
      }
    }
    content
    author {
      node {
        email
        name
        uri
      }
    }
    seo {
      title
    }
  }
}

This gives me an error "Cannot query field \"edges\" on type \"WpPostToCategoryConnection\". Did you mean \"nodes\"?". If I remove edges it works. Seo also gives corrrect values, but not edges.

[ashhitch]

@AndrzejBaran unfortunately Gatsby does not support edge fields