Error: Clerk: auth() was called but Clerk can't detect usage of clerkMiddleware(). Please ensure the following:

• Your Middleware exists at ./src/middleware.(ts|js)
• clerkMiddleware() 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.

please resolve it to open sanity studio