### Summary

I have a problem with middleware in the last version of next.js, I get this error every time.

Error: The Middleware "/middleware" must export a `middleware` or a `default` function

and in the console, this one : ``` ⨯ Error: The Middleware "/middleware" must export amiddlewareor adefault` function
at <unknown> (edge-wrapper.js:2:6)
1 | self._ENTRIES ||= {};

2 | const modProm = import('MODULE');

| ^
3 | modProm.catch(() => {});
4 | self._ENTRIES["middleware_middleware"] = new Proxy(modProm, {
5 | get(modProm, name) {
GET / 404 in 4ms

### Additional information

js
import createIntlMiddleware from 'next-intl/middleware'
import { NextRequest } from 'next/server'
import { locales } from '@i18n/routing'

export default async function middleware(request: NextRequest) {
const headerLocale = request.headers.get('x-test-locale')
const defaultLocale = (headerLocale ?? locales[0]) as (typeof locales)[number]

const handleI18nRouting = createIntlMiddleware({
locales: locales,
defaultLocale: defaultLocale
})
const response = handleI18nRouting(request)

response.headers.set('x-test-locale', defaultLocale)

return response
}

export const config = {
matcher: ['/((?!api|_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)']
}
```