运行php ./swoole_server.php 出错

[sfdota]

这里输入对bug做出清晰简洁的描述.

重现步骤
Uncaught PDOException: SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO) in /var/www/masterlab/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:39
Stack trace:
#0 /var/www/masterlab/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(39): PDO->__construct()
#1 /var/www/masterlab/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php(25): Doctrine\DBAL\Driver\PDOConnection->__construct()
#2 /var/www/masterlab/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(398): Doctrine\DBAL\Driver\PDOMySql\Driver->connect()
#3 /var/www/masterlab/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(1938): Doctrine\DBAL\Connection->connect()
#4 /var/www/masterlab/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(1557): Doctrine\DBAL\Connection->getWrappedConnection()
#5 /var/www/masterlab/app/model/DbModel.php(206): Doctrine\DBAL\Connection->exec()
#6 /var/www/masterlab/app/model/DbModel.php(153): main\app\model\DbModel->connect()

期望结果
简洁清晰的描述期望结果

实际结果
简述实际看到的结果，这里可以配上截图

附加说明
附加或额外的信息