When building the project, an error is reported: language key type error，version:3.19.0

[LiuCaptain]

Description

First of all, I had no problems with local development and local building. The project started and packaged normally. The local packaging is as follows:

But when I pushed the project to Vercel for packaging, a strange problem occurred, as shown below: But my multi-language key exists normally: So what is the problem?

Verifications

• [X] I've verified that the problem I'm experiencing isn't covered in the docs.
• [X] I've searched for similar, existing issues on GitHub and Stack Overflow.
• [X] I've compared my app to a working example to look for differences.

Mandatory reproduction URL

App Router

Reproduction description

When packaging and building on vercel, a strange type error occurs immediately

Expected behaviour

My code is developed and packaged normally locally, and I hope it can be packaged normally on Vercel.

[amannn]

I unfortunately also don't see any obvious pointers for the cause of the error.

This seems to be a usage question, I'll move this to a discussion …