Hi! The template submission form at vercel.com/templates/submit rejects every repository with "GitHub repository is not accessible. Your template repository must be public", including https://github.com/vercel/next.js.

My own template is public (it opens anonymously via api.github.com). GitHub is linked in Sign-in Methods and the Vercel GitHub App has access to all repositories. Tried the full URL and the owner/repo form, in a fresh private window too.