MonoRepo NextJS SSR build hangs on Generating static pages (0/4)

[alycda]

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App Id

d3hlmgrziazvps

AWS Region

us-west-2

Amplify Hosting feature

Frontend builds, Monorepo, SSR

Describe the bug

Following the steps here: https://medium.com/@writetochrispalmer/how-to-deploy-a-monorepo-next-js-13-app-to-aws-amplify-1700f0a17653 I created a similar monorepo: https://github.com/alycda/nextjs-amplify and connected to AWS Amplify.

Frontend Build hangs: (even when increasing timeout to max length)

Expected behavior

Build should complete all steps as seen in local environment: (run from GitHub Codespaces in VS Code)

$ yarn workspace client build
yarn workspace v1.22.19
yarn run v1.22.19
$ next build --debug
info  - Creating an optimized production build  
info  - Compiled successfully
info  - Linting and checking validity of types  
info  - Collecting page data  
info  - Generating static pages (4/4)
info  - Finalizing page optimization  

Route (app)                                Size     First Load JS
┌ ○ /                                      4.93 kB        81.8 kB
└ ○ /favicon.ico                           0 B                0 B
+ First Load JS shared by all              76.8 kB
  ├ chunks/7fd0f9f1-762a07e45b12abd7.js    50.5 kB
  ├ chunks/9-5c302a692c873de1.js           24.4 kB
  ├ chunks/main-app-56f6fc77559b64f5.js    211 B
  └ chunks/webpack-1de4b51dd62ec705.js     1.68 kB

Route (pages)                              Size     First Load JS
─ ○ /404                                   178 B          83.1 kB
+ First Load JS shared by all              82.9 kB
  ├ chunks/main-de0e748203dae2dd.js        81 kB
  ├ chunks/pages/_app-415a5670032b79f5.js  190 B
  └ chunks/webpack-1de4b51dd62ec705.js     1.68 kB

○  (Static)  automatically rendered as static HTML (uses no initial props)

Redirects

┌ source: /:path+/
├ destination: /:path+
└ permanent: true
 

Done in 13.67s.
Done in 13.93s.

Reproduction steps

1. follow https://medium.com/@writetochrispalmer/how-to-deploy-a-monorepo-next-js-13-app-to-aws-amplify-1700f0a17653

• see https://github.com/alycda/nextjs-amplify

2. Environment Variables

• AMPLIFY_DIFF_DEPLOY = false
• AMPLIFY_MONOREPO_APP_ROOT = packages/client
• _BUILD_TIMEOUT = 480
• _CUSTOM_IMAGE = public.ecr.aws/u8r8k5s9/aws-amplify-next:latest
• _LIVE_UPDATES = [{"pkg":"next-version","type":"internal","version":"latest"}]

3. Build image settings

• Using custom image: public.ecr.aws/u8r8k5s9/aws-amplify-next:latest
• Build timeout: 480m
• Live package updates: Next.js version - latest

4. Trigger a build
5. Observe timeout

• See https://main.d3hlmgrziazvps.amplifyapp.com/

Build Settings

version: 1
applications:
  - appRoot: packages/client
    frontend:
      phases:
        preBuild:
          commands:
            - node --version
            - export NODE_OPTIONS=--max-old-space-size=8192
            - npm install --location=global yarn
            - cd ../../
            - yarn install --frozen-lockfile --production
            - cd packages/client
            - yarn install --frozen-lockfile
            - yarn build
        build:
          commands:
            - yarn next start
      artifacts:
        baseDirectory: .next
        files:
          - '**/*'
      cache:
        paths:
          - 'node_modules/**/*'
          - '.next/cache/**/*'

### Log output

<details>

Starting phase: preBuild

Executing command: node --version

v16.16.0

Executing command: export NODE_OPTIONS=--max-old-space-size=8192

Executing command: npm install --location=global yarn

2023-05-09T05:23:04.963Z [INFO]: added 1 package, and audited 2 packages in 390ms
2023-05-09T05:23:04.965Z [INFO]: found 0 vulnerabilities
2023-05-09T05:23:04.969Z [INFO]: # Executing command: cd ../../
2023-05-09T05:23:04.969Z [INFO]: # Executing command: yarn install --frozen-lockfile --production
2023-05-09T05:23:05.224Z [INFO]: yarn install v1.22.19
2023-05-09T05:23:05.303Z [INFO]: [1/4] Resolving packages...
2023-05-09T05:23:05.499Z [INFO]: [2/4] Fetching packages...
2023-05-09T05:23:20.847Z [INFO]: [3/4] Linking dependencies...
2023-05-09T05:23:24.120Z [INFO]: [4/4] Building fresh packages...
2023-05-09T05:23:32.582Z [INFO]: Done in 27.36s.
2023-05-09T05:23:32.601Z [INFO]: # Executing command: cd packages/client
2023-05-09T05:23:32.601Z [INFO]: # Executing command: yarn install --frozen-lockfile
2023-05-09T05:23:32.748Z [INFO]: yarn install v1.22.19
2023-05-09T05:23:32.839Z [INFO]: [1/4] Resolving packages...
2023-05-09T05:23:33.047Z [INFO]: [2/4] Fetching packages...
2023-05-09T05:23:33.300Z [INFO]: [3/4] Linking dependencies...
2023-05-09T05:23:34.755Z [INFO]: [4/4] Building fresh packages...
2023-05-09T05:23:34.773Z [INFO]: Done in 2.03s.
2023-05-09T05:23:34.808Z [INFO]: # Executing command: yarn build
2023-05-09T05:23:34.952Z [INFO]: yarn run v1.22.19
2023-05-09T05:23:34.977Z [INFO]: $ next build --debug
2023-05-09T05:23:35.445Z [INFO]: warn - No build cache found. Please configure build caching for faster rebuilds. Read more: https://nextjs.org/docs/messages/no-cache
2023-05-09T05:23:35.461Z [INFO]: Attention: Next.js now collects completely anonymous telemetry regarding usage.
2023-05-09T05:23:35.461Z [INFO]: This information is used to shape Next.js' roadmap and prioritize features.
You can learn more, including how to opt-out if you'd not like to participate in this anonymous program, by visiting the following URL:
https://nextjs.org/telemetry
2023-05-09T05:23:35.549Z [INFO]: info - Creating an optimized production build...
2023-05-09T05:23:43.230Z [INFO]: info - Compiled successfully
2023-05-09T05:23:43.232Z [INFO]: info - Linting and checking validity of types...
2023-05-09T05:23:46.031Z [INFO]: info - Collecting page data...
2023-05-09T05:23:57.968Z [INFO]: info - Generating static pages (0/4)

</details>


### Additional information

Originally the NextJS app was created with the unsupported feature of `Next.js 13 app directory (beta)` but I removed that from the config.

[Matiduraan]

Same issue here

[victorccccc]

Hi, Thanks for reporting the issue. Can you please remove yarn next start from build command which starts the next server and blocks the process? Instead, you can put yarn build in build section

Feel free to reopen if the issue persists

Thanks

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