教程使用mysql出错Database Exception [ 未指定版本 ]

以下是根据Yii2的教程在windows环境下使用Mysql出错

config/db.php

<?php

return [

'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;dbname=yii2basic',
'username' => 'root',
'password' => '',
'charset' => 'utf8',

];

Database Exception – yii\db\Exception

SQLSTATE[HY000] [1049] Base 'yii2advanced' inconnue
↵
Caused by: PDOException

SQLSTATE[HY000] [1049] Base 'yii2advanced' inconnue