[BUG] The build process requires a custom not-found page to be defined

[dario-piotrowicz]

Describe the bug

I have a very minimalistic Next.js 14 app with only an api route, when trying to build my application using the adapter the build process fails with the following error unless I provide a custom not-found page:

Steps to reproduce

• pull down the code here: https://github.com/dario-piotrowicz/next-14-hello-world-app/tree/open-next
• run npm run build:worker and see that the build succeeds
• delete the app/not-found.tsx
• run npm run build:worker and see the build failing

Expected behavior

I don't think a custom not-found page should be mandatory

@opennextjs/cloudflare version

https://pkg.pr.new/@opennextjs/cloudflare@experimental

Node.js version

20.11.0

Wrangler version

3

next info output

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 24.1.0: Thu Oct 10 21:03:15 PDT 2024; root:xnu-11215.41.3~2/RELEASE_ARM64_T6000
  Available memory (MB): 32768
  Available CPU cores: 10
Binaries:
  Node: 20.11.0
  npm: 10.2.4
  Yarn: 1.22.19
  pnpm: 9.12.1
Relevant Packages:
  next: 14.2.6 // An outdated version detected (latest is 15.1.0), upgrade is highly recommended!
  eslint-config-next: N/A
  react: 18.3.1
  react-dom: 18.3.1
  typescript: 5.7.2
Next.js Config:
  output: N/A

Additional context

Not too important, but when forced to create a custom not-found page I then also need to have a root layout (https://github.com/dario-piotrowicz/next-14-hello-world-app/blob/open-next/app/layout.tsx), meaning that I actually need to add two unnecessary files to my app

[vicb]

@conico974 any thoughts/hints here?

[conico974]

I just didn't think about this case.
It should be a really simple fix, i'll create a PR

[vicb]

Thank you so much @conico974

@dario-piotrowicz, would you mind validating the fix in https://pkg.pr.new/@opennextjs/aws@674?

ref: opennextjs/opennextjs-aws#674

[dario-piotrowicz]

@dario-piotrowicz, would you mind validating the fix in https://pkg.pr.new/@opennextjs/aws@674?

Done 👍

[vicb]

Thanks @dario-piotrowicz!
I'll close this after the aws dep is updated