Victor Shumeyko

Got it, ok.

I'm resolved this problem, my dataProvider was empty and i got this error. Maybe your dataProvired is empty too?

Same problem

## SiteController ``` public function actionError() { $this->layout = 'content'; $exception = Yii::$app->errorHandler->exception; echo ''; var_dump($exception); echo ''; } ``` if you have custom error page