Next-i18next: Error with getServerSideProps and next-i18next@^8.0.0-beta.2

[Achaak]

Describe the bug

Error 502 in vercel, when using getServerSideProps with next-i18next@^8.0.0-beta.2

Occurs in next-i18next version

next-i18next@^8.0.0-beta.2

Steps to reproduce

Create dynamic page with next-i18next and getServerSideProps

Screenshots

OS

• Browser: Chrome 87.0.4280.141

[isaachinman]

@Achaak The error seems pretty straightforward – the /public/static/locales/fr dir is missing. For reference, this repo is deployed on Vercel without any issues. Let me know if you still feel as though there's a bug here.

[Achaak]

This is precisely the problem.
The file /public/static/locales/fr exists.
The other static pages work very well.

[isaachinman]

Do you have a reproducible repo?

[Achaak]

Repo: https://github.com/Achaak/next-i18next-issue
Page work: https://next-i18next-issue.vercel.app/fr
Page not work: https://next-i18next-issue.vercel.app/fr/123

Error:

[destruc7i0n]

I am encountering the same problem using Incremental Static Regeneration and deploying on Vercel. Version 8.0.0-beta.4

[isaachinman]

This looks to me like a transient filesystem issue which is probably pretty specific to Vercel. @Achaak or @destruc7i0n can you open a support ticket with Vercel and ask them why these files are available during SSG but not during SSR?

[yovanoc]

[isaachinman]

Not sure how you phrased the support ticket, but you'll need to make it clear this is a _filesystem_ issue, and is not specifically related to third-party packages.

[yovanoc]

Yes, maybe we could try again but I've said exactly this:

Hello, there is a potential transient filesystem issue during SSG but not during SSR

https://github.com/isaachinman/next-i18next/issues/919

[destruc7i0n]

I was able to resolve this by placing the following call above the usage of serverSideTranslations in my getStaticPaths.

path.resolve('./public/locales')

Usage in my code

They appear to be using vercel/nft to see which files to include in the serverless runtime.

[isaachinman]

Yep, that makes sense, and that is why path.resolve is in the docs for the current v7 version.

[Achaak]

I have test but with next-i18next-config.js or path.resolve (in getServerSideProps) and not work for me.

Version: next-i18next@^8.0.0-beta.4

Check my repo :
Repo: https://github.com/Achaak/next-i18next-issue
Page work: https://next-i18next-issue.vercel.app/fr
Page not work: https://next-i18next-issue.vercel.app/fr/123