Fatal error: Uncaught Error: Interface 'Automattic\WooCommerce\Blocks\Integrations\IntegrationInterface' not found in /home/regeneremoda/public_html/wp-content/plugins/checkout-fees-for-woocommerce/checkout-block/class-blocks-integration.php:19 Stack trace: #0 {main} thrown in /home/regeneremoda/public_html/wp-content/plugins/checkout-fees-for-woocommerce/checkout-block/class-blocks-integration.php on line 19