[🐛 Bug]: TypeError: Cannot redefine property: __import_unsupported

[Angrigo]

next-on-pages environment related information

No response

Description

I'm experiencing a runtime errors with my Next.js application deployed on Cloudflare Pages. The build process completes successfully, but the application fails at runtime with a message "Internal Server Error". This issue started occurring since yesterday.

In the logs i found "TypeError: Cannot redefine property: __import_unsupported"

Reproduction

No response

Pages Deployment Method

Pages CI (GitHub/GitLab integration)

Pages Deployment ID

https://f8b809f7.web-public-0fd.pages.dev/

Additional Information

No response

Would you like to help?

• Would you like to help fixing this bug?

[ShiftaDeband]

I had to downgrade:

npm i eslint-config-next@15.1.7 next@15.1.7

According to #952, it looks like Next.15 is not supported, and there don't appear to be any plans to add it:

This adapter won't be introducing official support. Please use the OpenNext adapter if you would like to use Next.js 15.

I should also note #944 references this issue as well.

[keiko233]

Any progress? I think upgrading to Next.js 15.2.3 right now is very important.
https://redirect.github.com/vercel/next.js/security/advisories/GHSA-f82v-jwr5-mffw

[VinhTruong2001]

no any updates still now ?

[sinan-zeroday]

Hi @keiko233 and @VinhTruong2001

Guys, we were also waiting in a similar situation. Then, we came across this blog post from Cloudflare(https://blog.cloudflare.com/builder-day-2024-announcements/).
Instead of waiting for the cloudflare/next-on-pages update, you should deploy using @opennextjs/cloudflare.

https://developers.cloudflare.com/pages/framework-guides/nextjs/ssr/

[baterick]

Hi @keiko233 and @VinhTruong2001

Guys, we were also waiting in a similar situation. Then, we came across this blog post from Cloudflare(https://blog.cloudflare.com/builder-day-2024-announcements/). Instead of waiting for the cloudflare/next-on-pages update, you should deploy using @opennextjs/cloudflare.

https://developers.cloudflare.com/pages/framework-guides/nextjs/ssr/

You'd think so but https://opennext.js.org/cloudflare has a pretty large pre 1.0 warning that i'm not super keen on

[keiko233]

Hi @keiko233 and @VinhTruong2001

Guys, we were also waiting in a similar situation. Then, we came across this blog post from Cloudflare(https://blog.cloudflare.com/builder-day-2024-announcements/). Instead of waiting for the cloudflare/next-on-pages update, you should deploy using @opennextjs/cloudflare.

https://developers.cloudflare.com/pages/framework-guides/nextjs/ssr/

I worked on two projects—one with @opennextjs/cloudflare and the other with cloudflare/next-on-pages. It looks like @opennextjs/cloudflare is a bit better.

link:

• https://github.com/keiko233/miku-ui-next (@opennextjs/cloudflare)
• https://github.com/keiko233/serverless-images-api (cloudflare/next-on-pages)

[irvinebroque]

See: #960

[dario-piotrowicz]

See: #960

Yes, I was about to mention this 🙂

Sorry for not seeing this issue before, as @irvinebroque mentioned it's been addressed in #960 and released in v1.13.11 🙂