Unable to find next-intl locale because the middleware didn't run on this request.

[arslanovngc]

Description

Everything works fine. Here is my middleware

When I run my code and open the page in the browser, the console (inside terminal) is clear. But when I open browser's console and refresh the page "Unable to find next-intl locale because the middleware didn't run on this request. See https://next-intl-docs.vercel.app/docs/routing/middleware#unable-to-find-locale. The notFound() function will be called as a result." this one error appeared.

I tested it in chrome, firefox, microsoft edge and same result. Error is appearing only when browser's console opened

Versions:
"react": "^18.3.1",
"next": "^14.2.4",
"next-intl": "^3.17.2"

Verifications

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

Mandatory reproduction URL

Sorry, I can not show my code

Reproduction description

Steps to reproduce:

1. Open reproduction
2. Click on …
3. See error: …

Expected behaviour

Console should be clear

[amannn]

It seems like there's an issue with your matcher regex and sourcemap requests. Review the linked troubleshooting guide in the error message or consider using the recommended matcher based on locale prefixes.

I'm going to move this to a discussion since this is not a bug report, but a usage question.