'app-backend', 'basePath' => dirname(__DIR__), 'vendorPath' => $rootDir . '/vendor', 'preload' => ['log'], 'controllerNamespace' => 'backend\controllers', 'modules' => [], 'extensions' => require($rootDir . '/vendor/yiisoft/extensions.php'), 'components' => [ 'db' => $params['components.db'], 'cache' => $params['components.cache'], 'mail' => $params['components.mail'], 'user' => [ 'identityClass' => 'common\models\User', 'enableAutoLogin' => true, ], 'log' => [ 'traceLevel' => YII_DEBUG ? 3 : 0, 'targets' => [ [ 'class' => 'yii\log\FileTarget', 'levels' => ['error', 'warning'], ], ], ], 'errorHandler' => [ 'errorAction' => 'site/error', ], ], 'params' => $params, ];