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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>
}

Server Components