vercel/next.js / errors / react-client-hook-in-server-component.mdx

---

title: React client hook in Server Component

Why This Error Occurred

You are using a React client hook in a Server Component.

Possible Ways to Fix It

Mark the component using the hook as a Client Component by adding 'use client' at the top of the file.

Before

import { useEffect } from 'react'

export default function Example() {
  useEffect(() => {
    console.log('in useEffect')
  })
  return <p>Hello world</p>
}

After

'use client'

import { useEffect } from 'react'

export default function Example() {
  useEffect(() => {
    console.log('in useEffect')
  })
  return <p>Hello world</p>
}

Useful Links

• Server Components