public function getBaseUrl()
{
if ($this->_baseUrl === null) {
$request = Yii::$app->getRequest();
if ($request instanceof Request) {
$this->_baseUrl = $request->getBaseUrl();
} else {
throw new InvalidConfigException('Please configure UrlManager::baseUrl correctly as you are running a console application.');
}
}
return $this->_baseUrl;
}