yii2框架关于log的配置

log里面记录了大量的不需需要的401 401的错误,占据了大量的磁盘空间; 

'log' => [    'traceLevel' => YII_DEBUG ? 3 : 0,    'targets' => [        [            'class' => 'yii\log\FileTarget',            'levels' => ['error', 'warning'],            'except' => [                'yii\web\HttpException:401',                'yii\web\HttpException:404',            ],            'logVars' => [], //Disable logging of _SERVER, _POST, etc.        ],    ],],