I’m using NextJS app dir, with no src dir and Clerk.

Above I listed the location of the middleware page.

digest: "4053108776"
 ⨯ Error: Clerk: auth() was called but Clerk can't detect usage of clerkMiddleware() (or the deprecated authMiddleware()). Please ensure the following:
-  clerkMiddleware() (or the deprecated authMiddleware()) is used in your Next.js Middleware.
- Your Middleware matcher is configured to match this route or page.
- If you are using the src directory, make sure the Middleware file is inside of it.

For more details, see https://clerk.com/docs/quickstarts/nextjs

    at $$ACTION_0 (./lib/checkUser.ts:18:89)
    at Header (./components/globals/Header.tsx:18:81)
    at stringify (<anonymous>)
    at stringify (<anonymous>)
digest: "4053108776"
 GET /_next/static/chunks/app/invalidateCache.js.map 404 in 147ms
 ✓ Compiled in 43ms (330 modules)

I can’t figure it out how to deal with this. I’ve seen alor of posts on this forum, tried many, but not working.