yii2 log problem

Dear All:

I have a question about yii2 log.

I use info level to save data to my database.

The information which i want is saved successfully, also is my categories which i set.

But there is always a categories named "application" saved in my table too.

How could i save ideal data without this strange "application info".

Since using property “except” is not working. (‘except’ => [ ‘application’ ])

p.s: I use Yii::info(‘Login Successfully’) when login successfully.

p.s2: The strange info is the username, password, post url, etc.

Please help me. Thnak you so much!!!!!