An unexpected error occurred.
Can't inherit abstract function Concrete\Core\Validator\ValidatorInterface::isValid() (previously declared abstract in Concrete\Core\Validator\ValidatorManagerInterface)
use Concrete\Core\Area\SubArea;
use Loader;
use \Concrete\Core\Block\BlockController;
use \Concrete\Core\Area\Layout\Layout as AreaLayout;
use \Concrete\Core\Area\Layout\Preset as AreaLayoutPreset;
use \Concrete\Core\Area\Layout\CustomLayout as CustomAreaLayout;
use \Concrete\Core\Area\Layout\ThemeGridLayout as ThemeGridAreaLayout;
use \Concrete\Core\Asset\CssAsset;
use URL;
use Page;
class Controller extends BlockController
{
// ココに諸々の処理
}