The issue is that ClerkProvider is blocking the entire app because the Clerk environment variables aren't set. Let me make Clerk optional so the app works without authentication configured:

Now let me also update the middleware to be optional:

I've updated the middleware to only initialize Clerk if the environment variables are configured. The app now works without Clerk credentials - it will render the marketplace, landing page, and all features without authentication. When you add your Clerk keys to the environment variables later, the authentication features will automatically activate. Try refreshing the page now and it should display without the blocking error.

Now that you've added the Clerk keys, let me update the layout to properly use ClerkProvider and the middleware to work with your credentials:

Let me fix that - I need to separate the server and client components:

Now let me update the middleware to work properly with the Clerk keys:

I've configured Clerk authentication with your provided credentials. The changes include:

1. Updated app/layout.tsx - Now properly wraps the app with ClerkProvider to enable authentication across all routes
2. Updated middleware.ts - Configured to protect specific routes (profile, dashboard, user API) while keeping the landing page, marketplace, sign-in, and sign-up pages publicly accessible

The marketplace should now display properly with full Clerk authentication enabled. Users can browse the marketplace without signing in, but they'll need to authenticate to access their profile or dashboard. Try refreshing the page now - the content should display correctly!