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# `<title>` should not be used in \_document.js's `<Head>`
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#### Why This Error Occurred
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.
#### Possible Ways to Fix It
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Set `<title>` in `pages/_app.js` instead:
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```js
// pages/_app.js
import React from 'react'
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import Head from 'next/head'
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function MyApp({ Component, pageProps }) {
return (
< >
< Head >
< title > My new cool app< / title >
< / Head >
< Component { . . . pageProps } / >
< />
)
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}
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export default MyApp
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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 )
