nextjs render_error ai_generated partial

Error: Hydration failed because the initial UI does not match what was rendered on the server

ID: nextjs/hydration-failed

Also available as: JSON · Markdown
60%Fix Rate
82%Confidence
285Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
14 active — — —

Root Cause

Server-rendered HTML doesn't match client-side render. Common with dynamic content, dates, or browser APIs.

generic

Workarounds

  1. 82% success Move browser-only code into useEffect 
    const [mounted, setMounted] = useState(false); useEffect(() => setMounted(true), []);

    Sources: https://nextjs.org/docs/messages/react-hydration-error

  2. 78% success Use dynamic import with ssr: false for client-only components 
    const Comp = dynamic(() => import('./Comp'), { ssr: false })

    Sources: https://nextjs.org/docs/app/building-your-application/optimizing/lazy-loading

Dead Ends

Common approaches that don't work:

  1. Suppress hydration warnings with suppressHydrationWarning 65% fail

    Masks real bugs, content will flash/shift for users

  2. Make everything client-side with 'use client' 78% fail

    Loses all SSR/SSG benefits, defeats the purpose of Next.js

Error Chain

Leads to:
Preceded by:
Frequently confused with: