so i have my app folder and I have

not-found.tsx in the same layer as the root level layout.tsx and page.tsx

app/not-found.tsx

import Link from 'next/link'

export default function NotFound() {
  return (
    <div>
      <h2>Not Found</h2>
      <p>Could not find requested resource</p>
      <Link href="/">Return Home</Link>
    </div>
  )
}

app/dash/not-found.tsx

import Link from 'next/link'

export default function NotFound() {
  return (
    <div>
      <h2>Dashboard Not Found</h2>
      <p>Could not find requested resource</p>
      <Link href="/">Return Home</Link>
    </div>
  )
}

But for some reason when i hit localhost:3000/dash/blahblah (a fake url)

i still get the root level not found.