Events errors not logged

[ViroManchego]

 to reproduce
Configure::errorReporting(0);
// Override minPHP's debugging setting. true to enable debugging, false to disable it
Configure::set('System.debug', true);
 PluginClass 
....
public function getEvents()
    {
        return [
            [
                'event' => 'Appcontroller.structure',
                'callback' => ['this', 'run']
            ] ]

} 

 public function run($event)
    { 

$params = $event->getParams();
        $return = $event->getReturnValue();
  call not available function ...

}