Excluding log types from e-mail target does not work

[basil-inc]

I have set up email logging for everything except 404 errors (since these would be far too common). However, I just got an e-mail with such a log.

This is the configuration in the app's params:

        'components.log' => [
                'traceLevel' => 0,
                'targets' => [
                        'file' => [
                                'class' => 'yii\log\FileTarget',
                                'levels' => ['error', 'warning'],
                        ],
                        'email' => [
                                'class' => 'yii\log\EmailTarget',
                                'except' => ['yii\web\HttpException\404'],
                                'levels' => ['error', 'warning'],
                                'message' => ['from' => 'webmaster@mydomain.com', 'to' => 'webmaster@mydomain.com'],
                        ],
                ],
        ]

This is the e-mail I got (apparently some random bot snooping around for a non-existing admin/config.php file):

2013/12/08 21:52:44 [24.11.249.140] [error]
[yii\web\HttpException:404] exception 'yii\base\InvalidRouteException'
with message 'Unable to resolve the request "admin/config.php".' in
/var/www/vendor/yiisoft/yii2/yii/base/Module.php:590
Stack trace:
#0
/var/www/vendor/yiisoft/yii2/yii/web/Application.php(77):
yii\base\Module->runAction('admin/config.ph...', Array)
#1
/var/www/vendor/yiisoft/yii2/yii/base/Application.php(289):
yii\web\Application->handleRequest(Object(yii\web\Request))
#2
/var/www/backend/web/index.php(25):
yii\base\Application->run()
#3 {main}

Next exception 'yii\web\NotFoundHttpException' with message 'Unable to
resolve the request "admin/config.php".' in
/var/www/vendor/yiisoft/yii2/yii/web/Application.php:88
Stack trace:
#0
/var/www/vendor/yiisoft/yii2/yii/base/Application.php(289):
yii\web\Application->handleRequest(Object(yii\web\Request))
#1
/var/www/backend/web/index.php(25):
yii\base\Application->run()
#2 {main}
2013/12/08 21:52:44 [24.11.249.140] [error]
[yii\i18n\PhpMessageSource::loadMessages] The message file for
category 'app' does not exist:
/var/www/common/messages/en-US/app.php
2013/12/08 21:52:44 [24.11.249.140] [info] [application] $_SESSION =
array (
  '__flash' =>
  array (
  ),
)

[qiangxue]

except should set as ['yii\web\HttpException:404'] instead ['yii\web\HttpException\404'].