Error when building nextjs 15 app while prerendering /500 & /404 (only happens with turborepo)

[ezeamin]

Verify canary release

• I verified that the issue exists in the latest Turborepo canary release.

Link to code that reproduces this issue

https://github.com/ezeamin/turbo-next-15

What package manager are you using / does the bug impact?

npm

What operating system are you using?

Windows

Which canary version will you have in your reproduction?

[email protected]

Describe the Bug

When minimal nextjs app (15.0.1 & 15.0.2-canary.6 - latest up to today) is being built, these errors appear:

┌ home#build > cache miss, executing 570f9f11bf8e8c82
│
│ > [email protected] build
│ > next build
│
│   ▲ Next.js 15.0.1
│
│    Creating an optimized production build ...
│  ✓ Compiled successfully
│  ✓ Linting and checking validity of types
│  ✓ Collecting page data
│ Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=object%20with%20keys%20%7B%24%24typeof%2C%20type%2C%20key%2C%20ref%2C%
│ 20props%7D for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
│     at Z (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:76:490)
│     at Xc (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:68:409)
│     at Zc (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:70:210)
│     at Z (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:76:89)
│     at Zc (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:70:481)
│     at Z (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:76:89)
│     at $c (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:78:98)
│     at bd (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:77:404)
│     at Z (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:76:217)
│     at Zc (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:71:479)
│ Error occurred prerendering page "/404". Read more: https://nextjs.org/docs/messages/prerender-error
│ Error: Minified React error #31; visit https://reactjs.org/docs/error-decoder.html?invariant=31&args[]=object%20with%20keys%20%7B%24%24typeof%2C%20type%2C%20key%2C%20ref%2C%
│ 20props%7D for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
│     at Z (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:76:490)
│     at Xc (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:68:409)
│     at Zc (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:70:210)
│     at Z (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:76:89)
│     at Zc (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:70:481)
│     at Z (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:76:89)
│     at $c (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:78:98)
│     at bd (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:77:404)
│     at Z (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:76:217)
│     at Zc (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\node_modules\react-dom\cjs\react-dom-server.browser.production.min.js:71:479)
│ Export encountered an error on /_error: /404, exiting the build.
│  ⨯ Static worker exited with code: 1 and signal: null
│ npm error Lifecycle script `build` failed with error:
│ npm error code 1
│ npm error path C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\apps\home
│ npm error workspace [email protected]
│ npm error location C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\apps\home
│ npm error command failed
│ npm error command C:\WINDOWS\system32\cmd.exe /d /s /c next build
│ command finished with error: command (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\apps\home) C:\Program Files\nodejs\npm.cmd run build exited (1)
└────>
home#build: command (C:\Users\Amin\Documents\Codigo\Pruebas\turbo-next-15\apps\home) C:\Program Files\nodejs\npm.cmd run build exited (1)

This may seem a nextjs error, but it doesn't happen outside of a monorepo handled by turborepo.

It sometimes shows error while prerendering /404, and sometimes while prerendering /500. This WASN'T happening with nextjs@14. This is shown when "Generating static pages (0/4)" is run, after other stages had finished successfully..

Dev execution runs without problems. Running npm run build from apps/home also shows the same errors.

It also occurs with [email protected], tested on linux and windows.

Expected Behavior

Build finishes without any problems.

To Reproduce

1. Run npm i --force (to avoid react@19 peer deps errors)
2. Run npm run build
3. See console output.

Additional context

I tested this on different PCs, using next 15,15.0.1, and over canary release 15.0.2-canary.6. Also tested on docker.

[chris-olszewski]

I'm confused by the following statements:

This may seem a nextjs error, but it doesn't happen outside of a monorepo handled by turborepo.

Running npm run build from apps/home also shows the same errors.

So does the error only appear once npm add -D turbo is run in the repository? I removed any turbo installation and configuration in the repro you provided and the error remained when I ran npm run build from apps/home. Could you provide a repro without Turborepo that works as expected?

[ezeamin]

Hi @chris-olszewski. Sure do. Try this: https://github.com/ezeamin/non-turbo-next-15 (which is the same empty nextjs 15 app, I just took it off the monorepo). You'll see it builds successfully: