Cancel Rendering Route Error when Router Push hash

Explanation of the problem

During the verification of a canary release in Next.js, an issue has been identified. The problem manifests as an error when attempting to store more information in the hash and pushing the updated hash to the router. The specific error encountered is “Cancel rendering route.” This behavior is similar to a previously reported bug

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Problem solution for: Cancel Rendering Route Error when Router Push hash

To solve the issue of encountering a “Cancel rendering route” error when pushing an updated hash to the router in Next.js, the following steps can be taken:

1. Update Next.js and related packages: Ensure that you are using the latest version of Next.js and the relevant packages (e.g., react, react-dom). Update your project’s dependencies to the latest stable releases by running the appropriate package manager command. For example, with Yarn: yarn upgrade next react react-dom.
2. Check for compatibility issues: Verify that the versions of Next.js, React, and other related packages you are using are compatible with each other. Incompatibilities between package versions can sometimes lead to unexpected errors. Refer to the documentation or release notes of the respective packages to ensure compatibility.
3. Analyze the fix in the pull request: Examine the fix implemented in the pull request (https://github.com/vercel/next.js/pull/36828) mentioned in the problem description. Review the changes made to understand how the issue was resolved. It may provide insights into potential workarounds or adjustments you can make in your code.
4. Debug the code and error messages: Use debugging techniques to identify the root cause of the “Cancel rendering route” error. Inspect the code related to storing information in the hash and the subsequent router behavior. Review the error message and stack trace to pinpoint the location where the error occurs. This process can involve placing debug statements, logging, and stepping through the code execution.
5. Implement a workaround or apply the fix: Based on the analysis and debugging results, apply a workaround or adopt the fix implemented in the referenced pull request. Modify your code accordingly to address the issue. This may involve adjusting the way you store information in the hash or making changes to the router behavior.
6. Test thoroughly: After implementing the solution, thoroughly test your application to ensure that the “Cancel rendering route” error no longer occurs. Verify that the pages change as expected without encountering any errors. Test different scenarios and edge cases to validate the stability and correctness of the solution.
7. Contribute to the open-source project: If you believe the issue is related to the Next.js framework itself, consider contributing to the open-source project by reporting the problem, providing relevant details, and sharing your findings. This can help the Next.js community address the issue and improve the framework for everyone.

It is important to note that the specific solution may vary depending on the root cause of the issue and the details of your codebase. Therefore, thorough analysis, debugging, and testing are crucial for effectively resolving the problem.

// pages/index.js
import { getStaticProps } from 'next';

export function HomePage({ data }) {
  // Render the page using the fetched data
}

export async function getStaticProps() {
  const data = await fetch('https://api.example.com/data');
  // Process data and return it as props
  return {
    props: {
      data,
    },
    revalidate: 60, // Re-generate the page every 60 seconds
  };
}

// pages/dashboard.js
import { getSession } from 'next-auth/client';

export function DashboardPage({ user }) {
  // Render the dashboard page for authenticated users
}

export async function getServerSideProps(context) {
  const session = await getSession(context);
  if (!session) {
    // Redirect unauthenticated users
    return {
      redirect: {
        destination: '/login',
        permanent: false,
      },
    };
  }
  // Retrieve user data and pass it as props
  return {
    props: {
      user: session.user,
    },
  };
}

// components/Button.js
import styles from './Button.module.css';

export function Button({ children }) {
  return <button className={styles.button}>{children}</button>;
}

// Button.module.css
.button {
  /* Styles specific to the Button component */
}

// pages/index.js
import React from 'react';

const HomePage = ({ data }) => {
  return (
    <div>
      <h1>Welcome to Next.js!</h1>
      <p>Data: {data}</p>
    </div>
  );
};

export async function getServerSideProps() {
  // Fetch data from an API
  const response = await fetch('https://api.example.com/data');
  const data = await response.json();

  return {
    props: {
      data,
    },
  };
}

export default HomePage;

// pages/blog/[slug].js
import React from 'react';

const BlogPost = ({ post }) => {
  return (
    <div>
      <h1>{post.title}</h1>
      <p>{post.content}</p>
    </div>
  );
};

export async function getStaticPaths() {
  // Fetch list of blog post slugs from an API
  const response = await fetch('https://api.example.com/blog');
  const slugs = await response.json();

  // Generate paths for all blog posts
  const paths = slugs.map((slug) => ({ params: { slug } }));

  return {
    paths,
    fallback: false,
  };
}

export async function getStaticProps({ params }) {
  // Fetch blog post data based on the slug
  const response = await fetch(`https://api.example.com/blog/${params.slug}`);
  const post = await response.json();

  return {
    props: {
      post,
    },
  };
}

export default BlogPost;

// pages/api/hello.js
export default function handler(req, res) {
  res.status(200).json({ message: 'Hello, World!' });
}