Describe the bug
The page for an invalid tag, such as https://tailwind-nextjs-starter-blog.vercel.app/tags/zzz, is returning a status code of 200 (OK) instead of the expected 404 (Not Found).

To Reproduce
Steps to reproduce the behavior:

1. Open your web browser.
2. Navigate to https://tailwind-nextjs-starter-blog.vercel.app/tags/zzz.
3. Observe the HTTP status code of the page.
4. See that the page shows a status code of 200 instead of 404.

Expected behavior
When accessing a URL with an invalid tag, such as https://tailwind-nextjs-starter-blog.vercel.app/tags/zzz, the expected response should be a 404 (Not Found) status code, indicating that the requested resource does not exist.