How to Fix: Hydration failed because initial UI does not match server-rendered HTML when reading localStorage in Next.js 14
Learn how to fix: Hydration failed because initial UI does not match server-rendered HTML when reading localStorage in Next.js 14.
📋 Table of Contents
To fix the Hydration failed error in Next.js 14 App Router, you need to ensure that your initial UI matches the server-rendered HTML when reading localStorage. One way to achieve this is by using the `useEffect` hook with a function that checks if the theme has been set in localStorage and updates it accordingly.
🔍 Why This Happens
- [Cause]
🔧 Proven Troubleshooting Steps
Method 1: [Name]
- Step 1: Check if the theme has been set in localStorage and update it if necessary.
Method 2: [Name]
- Step 1: Use the `useEffect` hook to check if the theme has been set in localStorage and update it accordingly.
✨ Wrapping Up
By following these steps, you should be able to fix the Hydration failed error in Next.js 14 App Router and ensure that your initial UI matches the server-rendered HTML when reading localStorage.
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