useContext null Next.js

Why This Happens

In Next.js, a provider is missing or component rendered on wrong side. This is one of the most common Next.js errors developers encounter. Understanding the root cause helps you fix it quickly and prevent it from recurring.

The Problem

const { theme } = useTheme();
// No ThemeProvider

The Fix

// Wrap app in providers:
<ThemeProvider>
  <App />
</ThemeProvider>

Step-by-Step Fix

1. 1

   Identify the error

   Look at the error message: Cannot read properties of null (reading 'useContext'). This tells you exactly what went wrong.

2. 2

   Find the cause

   Check the stack trace to find which line of your Next.js code triggered this error.

3. 3

   Apply the fix

   Use the corrected code pattern shown above. Test to confirm the error is resolved.