No log for console app

Hi all,

I am writing a console app by using Yii2. By default, the log is configured in config/console.php file, but I can not find any log information in app.log file. Do i need change the default log configuration?

My log section in config/console.php is default setting. Like this:

'components' => [


    'cache' => require(__DIR__ . '/cache.php'),


    'log' => [


        'targets' => [


            [


                'class' => 'yii\log\FileTarget',


                'levels' => ['error', 'warning'],


            ],


        ],


    ],


    'db' => $db,


],

Thanks,

Uping

Config seems to be OK.