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## Summary Remove redundant `#` from [error pages](https://github.com/vercel/next.js/tree/canary/errors). ## Description Follow up #52038 and #72263. Updated [template.txt](https://github.com/vercel/next.js/blob/canary/errors/template.txt) and clarified the header deps. Then rewrite as per the template. ### 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]>
58 lines
1.1 KiB
Plaintext
58 lines
1.1 KiB
Plaintext
---
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title: React Class component rendered in a Server Component
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---
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## Why This Error Occurred
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You are rendering a React Class Component in a Server Component, `React.Component` and `React.PureComponent` only works in Client Components.
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## Possible Ways to Fix It
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Use a Function Component.
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### Before
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```jsx filename="app/page.js"
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export default class Page extends React.Component {
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render() {
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return <p>Hello world</p>
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}
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}
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```
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### After
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```jsx filename="app/page.js"
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export default function Page() {
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return <p>Hello world</p>
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}
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```
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Mark the component rendering the React Class Component as a Client Component by adding `'use client'` at the top of the file.
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### Before
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```jsx filename="app/page.js"
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export default class Page extends React.Component {
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render() {
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return <p>Hello world</p>
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}
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}
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```
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### After
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```jsx filename="app/page.js"
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'use client'
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export default class Page extends React.Component {
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render() {
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return <p>Hello world</p>
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}
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}
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```
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## Useful Links
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[Server Components](/docs/app/building-your-application/rendering/server-components)
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