@ -90,6 +90,8 @@ class ErrorHandler extends Component
$useErrorView = !YII_DEBUG || $exception instanceof UserException;
$response = Yii::$app->getResponse();
$response->getHeaders()->removeAll();
if ($useErrorView && $this->errorAction !== null) {
$result = Yii::$app->runAction($this->errorAction);
if ($result instanceof Response) {