Авторизация с помощью redbean не подключается к БД

Fatal error: Uncaught exception 'PDOException' with message 'Could not connect to database (reg).' in D:\OpenServer\domains\www.bike-news.com\libs\rb.php:929 Stack trace: #0 D:\OpenServer\domains\www.bike-news.com\libs\rb.php(699): RedBeanPHP\Driver\RPDO->connect() #1 D:\OpenServer\domains\www.bike-news.com\libs\rb.php(953): RedBeanPHP\Driver\RPDO->runQuery('show tables', Array) #2 D:\OpenServer\domains\www.bike-news.com\libs\rb.php(974): RedBeanPHP\Driver\RPDO->GetAll('show tables', Array) #3 D:\OpenServer\domains\www.bike-news.com\libs\rb.php(3675): RedBeanPHP\Driver\RPDO->GetCol('show tables', Array) #4 D:\OpenServer\domains\www.bike-news.com\libs\rb.php(5963): RedBeanPHP\Adapter\DBAdapter->getCol('show tables') #5 D:\OpenServer\domains\www.bike-news.com\libs\rb.php(5285): RedBeanPHP\QueryWriter\MySQL->getTables() #6 D:\OpenServer\domains\www.bike-news.com\libs\rb.php(7764): RedBeanPHP\QueryWriter\AQueryWriter->tableExists('users') #7 D:\OpenServer\domains\www.bike-news.com\libs\rb.php(7862): RedBeanPHP\Repository->tab in D:\OpenServer\domains\www.bike-news.com\libs\rb.php on line 929

Файл db.php

    <?php
require  "libs/rb.php";
 R::setup( 'mysql:host=localhost;dbname=reg','root', ' ' );
?>