V3 Migration: React Automatic Runtime Error

[anaclumos]

Error: Docusaurus server-side rendering could not render static page with path /r/6B3AC8 because of error: React is not defined
    at render (main:621884:26)
    at async /Users/cho/Downloads/www/node_modules/p-map/index.js:57:22 {
  [cause]: ReferenceError: React is not defined
      at IconExternalLink (main:659484:5)
      at Uc (main:587364:44)
      at Xc (main:587366:253)
      at Z (main:587372:89)
      at Yc (main:587375:98)
      at $c (main:587374:140)
      at Z (main:587372:345)
      at Xc (main:587367:476)
      at Z (main:587372:89)
      at Yc (main:587375:98)
}

Getting the following error while upgrading to Docusaurus v3. Most likely related to the React Automatic Runtime. Any guides or document I should look into?

[Josh-Cena]

Does it work in local development? Could you try making a minimal reproduction? That path looks suspiciously like an autogenerated route—are you sure the code doesn't contain any hacks like relying on the React variable?

[anaclumos]

Ah, the path is simply because I hard-coded the slug. It's this Repo

I resolved this by re-adding import React from 'react' to where it was... Seems like React Automatic Runtime isn't working for some reason.