使用Security::generateRandomKey()的时候报错 [ 2.0 版本 ]

在使用yii命令行生成管理员账号的时候报错：
Exception 'yii\base\UnknownPropertyException' with message 'Getting unknown property: app\commands\SystemController::_useLibreSSL'

$admin = new User();
$admin->username = "admin";
$admin->auth_key = Security::generateRandomKey();
$admin->password_hash = Security::generatePasswordHash();
$admin->password_reset_token = '';
$admin->email = "admin@qq.com";
$admin->mobile = "13888888888";
$admin->status = User::STATUS_ACTIVE;
$admin->created_at = time();
$admin->updated_at = time();
$admin->save();