Hi, guys. Looks like i need some GURU 
I need override ErrorAction (i dont want see default error template. i want error in popup.) for that purpose i’m using TOASTR. It was working before today. It just stoped work. Adunno why.
inside SiteController
public function actions()
{
return [
'error' => [
'class' => 'common\overrides\web\ErrorAction',
],
];
}
and common\overrides\web\ErrorAction
<?php
namespace common\overrides\web;
use Yii;
use yii\base\Exception;
use yii\base\UserException;
use yii\helpers\Url;
class ErrorAction extends \yii\web\ErrorAction
{
public function run()
{
if (($exception = Yii::$app->getErrorHandler()->exception) === null) {
// action has been invoked not from error handler, but by direct route, so we display '404 Not Found'
$exception = new HttpException(404, Yii::t('yii', 'Page not found.'));
}
if ($exception instanceof HttpException) {
$code = $exception->statusCode;
} else {
$code = $exception->getCode();
}
if ($exception instanceof Exception) {
$name = $exception->getName();
} else {
$name = $this->defaultName ?: Yii::t('yii', 'Error');
}
if ($code) {
$name .= " (#$code)";
}
if ($exception instanceof UserException) {
$message = $exception->getMessage();
} else {
$message = $this->defaultMessage ?: Yii::t('yii', 'An internal server error occurred.');
}
if (Yii::$app->getRequest()->getIsAjax()) {
return "$name: $message";
} else {
Yii::$app->getSession()->setFlash('error', $message);
//#POINT
return $this->controller->redirect(Url::toRoute(['/site/dashboard']));
}
}
}
i debugged and sure that php reaches #POINT (look at comment in code) but redirect does nothing
