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## Summary Update code block language in [error pages](https://github.com/vercel/next.js/tree/canary/errors). ### Improving Documentation - [x] Run `pnpm prettier-fix` to fix formatting issues before opening the PR. - [x] Read the Docs Contribution Guide to ensure your contribution follows the docs guidelines: https://nextjs.org/docs/community/contribution-guide Co-authored-by: Delba de Oliveira <[email protected]>
34 lines
724 B
Plaintext
34 lines
724 B
Plaintext
---
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title: '`<title>` should not be used in _document.js `<Head>`'
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---
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## Why This Error Occurred
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Adding `<title>` in `pages/_document.js` will lead to unexpected results with `next/head` since `_document.js` is only rendered on the initial pre-render.
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## Possible Ways to Fix It
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Set `<title>` in `pages/_app.js` instead:
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```jsx filename="pages/_app.js"
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import React from 'react'
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import Head from 'next/head'
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function MyApp({ Component, pageProps }) {
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return (
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<>
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<Head>
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<title>My new cool app</title>
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</Head>
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<Component {...pageProps} />
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</>
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)
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}
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export default MyApp
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```
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## Useful Links
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- [The issue this was reported in: #4596](https://github.com/vercel/next.js/issues/4596)
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