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Error occurred prerendering page. Cannot read property of undefined.

See original GitHub issue

Bug report

Describe the bug

Build error occured when run next build with dynamic path routing. Error code as below:

Automatically optimizing pages .
Error occurred prerendering page "/posts/[id]". Read more: https://err.sh/next.js/prerender-error:
TypeError: Cannot read property 'map' of undefined

> Build error occurred
Error: Export encountered errors
    at _default (D:\Workspace\nextJsTest\node_modules\next\dist\export\index.js:19:1086)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
    at async build (D:\Workspace\nextJsTest\node_modules\next\dist\build\index.js:36:218)
Automatically optimizing pages .npm ERR! code ELIFECYCLE

To Reproduce

Github repo here

Clone or download github repo.
Run npm install
Run npm run build

Expected behavior

No issue when execute npm run dev. It only happen when execute npm run build. Expected no error occur.

System information

OS: Windows
Browser Firefox
Version of Next.js: 9.3.5
Version of Node.js: 12.16.2

Additional context

$ npm run build

nextjstest@1.0.0 build D:\Workspace\nextJsTest next build

Creating an optimized production build

Compiled successfully.

Automatically optimizing pages .
Error occurred prerendering page "/posts/[id]". Read more: https://err.sh/next.js/prerender-error:
TypeError: Cannot read property 'map' of undefined

> Build error occurred
Error: Export encountered errors
    at _default (D:\Workspace\nextJsTest\node_modules\next\dist\export\index.js:19:1086)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
    at async build (D:\Workspace\nextJsTest\node_modules\next\dist\build\index.js:36:218)
Automatically optimizing pages .npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! nextjstest@1.0.0 build: `next build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the nextjstest@1.0.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\User\AppData\Roaming\npm-cache\_logs\2020-04-19T05_52_20_084Z-debug.log

Issue Analytics

State:
Created 3 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

raychuahcommented, Apr 19, 2020

Thanks!

0reactions

balazsorban44commented, Jan 30, 2022

This issue has been automatically locked due to no recent activity. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.

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