^^&&^^

Edit File: NoticeHandler.php

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

use Automattic\Kkart\Blocks\StoreApi\Routes\RouteException;

/**
 * NoticeHandler class.
 * Helper class to convert notices to exceptions.
 *
 * @internal This API is used internally by Blocks--it is still in flux and may be subject to revisions.
 */
class NoticeHandler {

/**
	 * Convert queued error notices into an exception.
	 *
	 * For example, Payment methods may add error notices during validate_fields call to prevent checkout.
	 * Since we're not rendering notices at all, we need to convert them to exceptions.
	 *
	 * This method will find the first error message and thrown an exception instead. Discards notices once complete.
	 *
	 * @throws RouteException If an error notice is detected, Exception is thrown.
	 *
	 * @param string $error_code Error code for the thrown exceptions.
	 */
	public static function convert_notices_to_exceptions( $error_code = 'unknown_server_error' ) {
		if ( 0 === kkart_notice_count( 'error' ) ) {
			return;
		}

$error_notices = kkart_get_notices( 'error' );

// Prevent notices from being output later on.
		kkart_clear_notices();

foreach ( $error_notices as $error_notice ) {
			throw new RouteException( $error_code, $error_notice['notice'], 400 );
		}
	}
}