PhpStorm中的Xdebug不显示局部变量

I trying install Xdebug on PhpStorm + OpenServer. Everywhere php v7.2. I tried several times to install different version of Xdebug.
There are my settings:

Also have Xdebug helper in Chrome, but variables still doesn't display.

If I enable break at first line flag, phpstorm show me this, but if I press "step into" it disappears.