| --- |
| title: Addressing "App Container Deprecated" Error in Next.js |
| description: This document guides developers on how to resolve the "App Container Deprecated" error in Next.js by updating their custom App component. |
| --- |
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| The "App Container Deprecated" error usually occurs when you are using the `<Container>` component in your custom `<App>` (`pages/_app.js`). Prior to version `9.0.4` of Next.js, the `<Container>` component was used to handle scrolling to hashes. |
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| From version `9.0.4` onwards, this functionality was moved up the component tree, rendering the `<Container>` component unnecessary in your custom `<App>`. |
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| To resolve this issue, you need to remove the `<Container>` component from your custom `<App>` (`pages/_app.js`). |
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| **Before** |
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| ```jsx filename="pages/_app.js" |
| import React from 'react' |
| import App, { Container } from 'next/app' |
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| class MyApp extends App { |
| render() { |
| const { Component, pageProps } = this.props |
| return ( |
| <Container> |
| <Component {...pageProps} /> |
| </Container> |
| ) |
| } |
| } |
|
|
| export default MyApp |
| ``` |
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| **After** |
|
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| ```jsx filename="pages/_app.js" |
| import React from 'react' |
| import App from 'next/app' |
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| class MyApp extends App { |
| render() { |
| const { Component, pageProps } = this.props |
| return <Component {...pageProps} /> |
| } |
| } |
|
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| export default MyApp |
| ``` |
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| After making this change, your custom `<App>` should work as expected without the `<Container>` component. |
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| - [Custom App](/docs/pages/building-your-application/routing/custom-app) |
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