v11 was created by restoring v6

I see the issue! The API is still using $ currency formatting instead of Naira ₦. Let me fix that and add debugging to see what's happening:

Now let me add better error handling and debugging to the frontend to see what's happening:

I've added debugging logs to both the frontend and API to help track what's happening. Now when you click "Predict Price", you'll be able to see in the browser console and server logs what data is being sent and received. The API now correctly formats prices in Nigerian Naira (₦) instead of dollars. Check the preview - the prediction card should now display properly with Naira currency formatting when you submit the form.