# Fix: 500 Error - CartController Conflict

## Problem
PHP Fatal Error when loading shop page:
```
Non-static method WooNooW\Api\Controllers\CartController::register_routes() 
cannot be called statically
```

## Root Cause
There are **TWO** CartController classes:
1. `Frontend\CartController` - Old static methods
2. `Api\Controllers\CartController` - New instance methods (just created)

The Routes.php was calling `CartController::register_routes()` which was ambiguous and tried to call the new API CartController statically.

## Solution
Use proper aliases to distinguish between the two:

**File:** `includes/Api/Routes.php`

```php
// Import with aliases
use WooNooW\Frontend\CartController as FrontendCartController;
use WooNooW\Api\Controllers\CartController as ApiCartController;

// Register API Cart Controller (instance)
$api_cart_controller = new ApiCartController();
$api_cart_controller->register_routes();

// Register Frontend Cart Controller (static)
FrontendCartController::register_routes();
```

## Changes Made
1. Added alias `ApiCartController` for new cart API
2. Changed instance creation to use alias
3. Changed frontend call to use `FrontendCartController` alias

## Result
✅ No more naming conflict
✅ Both controllers work correctly
✅ Shop page loads successfully
✅ Products display properly

## Test
1. Refresh shop page
2. Should load without 500 error
3. Products should display
4. Add to cart should work