^^&&^^

Edit File: RouteException.php

<?php
namespace Automattic\Kkart\Blocks\StoreApi\Routes;

/**
 * ReserveStockRouteExceptionException class.
 *
 * @internal This API is used internally by Blocks--it is still in flux and may be subject to revisions.
 */
class RouteException extends \Exception {
	/**
	 * Sanitized error code.
	 *
	 * @var string
	 */
	public $error_code;

/**
	 * Additional error data.
	 *
	 * @var array
	 */
	public $additional_data = [];

/**
	 * Setup exception.
	 *
	 * @param string $error_code       Machine-readable error code, e.g `kkart_invalid_product_id`.
	 * @param string $message          User-friendly translated error message, e.g. 'Product ID is invalid'.
	 * @param int    $http_status_code Proper HTTP status code to respond with, e.g. 400.
	 * @param array  $additional_data  Extra data (key value pairs) to expose in the error response.
	 */
	public function __construct( $error_code, $message, $http_status_code = 400, $additional_data = [] ) {
		$this->error_code      = $error_code;
		$this->additional_data = array_filter( (array) $additional_data );
		parent::__construct( $message, $http_status_code );
	}

/**
	 * Returns the error code.
	 *
	 * @return string
	 */
	public function getErrorCode() {
		return $this->error_code;
	}

/**
	 * Returns additional error data.
	 *
	 * @return array
	 */
	public function getAdditionalData() {
		return $this->additional_data;
	}
}