[Next.js] Unhandled Runtime Error

In today’s article, we will delve deeply into the issue of Unhandled Runtime Error in Next.js. We will explore what causes this error and how it manifest in your application. Additionally, we will provide a step-by-step guide on how to diagnose and resolve these errors effectively. By the end of this article, you will have a comprehensive understanding of how to handle runtime errors in Next.js, ensuring your application runs smoothly and efficiently.

Let’s dive into the solutions right away!

1. Check the Error Message and Stack Trace :

   ✬ Carefully read the error message and stack trace that Next.js provides in the browser or terminal. It usually points directly to the file and line number causing the issue.

2. Common Causes and Fixes :

   ✬ Incorrect Imports or Missing Modules:

   • Ensure all imports are correct and that all necessary modules are installed.

   • Check for typos in component names, file paths, or module names.

✬ Runtime Errors in Components :

• Look for runtime errors in your components, such as accessing properties on undefined objects, improper use of hooks, or incorrect JSX syntax.

✬ Use of useEffect and useState:

• Verify that hooks are used correctly, especially inside functional components.

• Ensure that useEffect dependencies are properly set to avoid unintended infinite loops.

3. Third-party Libraries :

   ✬ If you're using third-party libraries, ensure they are compatible with the version of Next.js you are using. Check for any breaking changes in their documentation.

4. Include “use client”; if your component contains client-side logic :

   ✬ In Next.js, especially with the App Router (introduced in Next.js 13), you need to specify 'use client' at the top of your component files if they contain client-side logic like hooks (useState, useEffect, useContext, etc.).

    “use client”;
    // rest of the code
   

   —> This was the mistake in my case. because I was using framer-motion and it uses client-side logic like useContext . Below is the error I encountered :

   

5. Update Dependencies:

   ✬ Ensure that all dependencies are up to date, as some runtime errors can come from outdated packages :

    npm update
   

You've reached the end of this article. I hope you found the information helpful and insightful. If you have any questions or need further clarification on any of the points discussed, please feel free to leave a comment or reach out directly. Remember, staying up-to-date with best practices and continuously learning is key to becoming a better developer. Thank you for reading until the end :)

I will look forward to sharing more insights with you in future articles. Happy Coding 😊!!!