react

Server HTML missing expected element

Expected.*server HTML.*contain.*matching

Fixes

1.Don't conditionally render based on client state
2.Use useEffect for conditional rendering after mount
3.Check for third-party scripts modifying DOM

hydrationssrdom

Related Errors

React hydration mismatch

Hydration failed because.*server rendered HTML.*didn't match

•Ensure server and client render same content
•Use suppressHydrationWarning for dynamic content

Text content hydration mismatch

Text content does not match server-rendered HTML

•Don't use Date.now() or Math.random() in render
•Use useEffect for client-only values

use client directive error in Server Component

(useClient|use client).*server component

•Add 'use client' at top of file
•Move useState/useEffect to client component