Fatal error: Uncaught Error: Class "Automattic\WooCommerce\Blocks\BlockTypes\AbstractBlock" not found in C:\xampp\htdocs\wo\woocommerce\src\Blocks\BlockTypes\Checkout.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wo\woocommerce\src\Blocks\BlockTypes\Checkout.php on line 19