How to use the next-server/dist/server/require.pageNotFoundError function in next-server

try {
        normalizedPagePath = normalizePagePath(page)
      } catch (err) {
        console.error(err)
        throw pageNotFoundError(normalizedPagePath)
      }

      let pagePath = await findPageFile(pagesDir, normalizedPagePath, pageExtensions)

      // Default the /_error route to the Next.js provided default page
      if (page === '/_error' && pagePath === null) {
        pagePath = 'next/dist/pages/_error'
      }

      if (pagePath === null) {
        throw pageNotFoundError(normalizedPagePath)
      }

      let pageUrl = `/${pagePath.replace(new RegExp(`\\.+(?:${pageExtensions.join('|')})$`), '').replace(/\\/g, '/')}`.replace(/\/index$/, '')
      pageUrl = pageUrl === '' ? '/' : pageUrl
      const bundleFile = pageUrl === '/' ? '/index.js' : `${pageUrl}.js`
      const name = join('static', buildId, 'pages', bundleFile)
      const absolutePagePath = pagePath.startsWith('next/dist/pages') ? require.resolve(pagePath) : join(pagesDir, pagePath)

      page = posix.normalize(pageUrl)

      return new Promise((resolve, reject) => {
        // Makes sure the page that is being kept in on-demand-entries matches the webpack output
        const normalizedPage = normalizePage(page)
        const entryInfo = entries[normalizedPage]

        if (entryInfo) {