Can't "edit comment" with event in config

[akmaks]

Hi! I configured some events with basic Comment model. When I was trying to edit existing comment I have got Error "Class name must be a valid object or a string".
For example, with this code "edit comment" don't working:

'comments' => [
'class' => 'rmrevin\yii\module\Comments\Module',
'userIdentityClass' => 'frontend\models\User',
'useRbac' => false,
'modelMap' => [
'Comment' => [
'class' => 'rmrevin\yii\module\Comments\models\Comment',
'on ' . yii\db\ActiveRecord::EVENT_INIT => function($event) {
print_r($event->sender);
},
],
],
],