v2.1.0 it's a breaking change about laravel-cors HOT 7 CLOSED

use Fruitcake\Cors\CorsServiceProvider as ParentCorsServiceProvider;
use Asm89\Stack\CorsService;

class CorsServiceProvider extends ParentCorsServiceProvider
{
    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        $this->mergeConfigFrom($this->configPath(), 'cors');

        $this->app->scoped(CorsService::class, function () {
            return new CorsService($this->customCorsOptions());
        });
    }

    /**
     * Get options for CorsService
     *
     * @return array
     */
    protected function customCorsOptions(): array
    {
        $options = $this->corsOptions();

        $options['allowedOrigins'] = static::allowedOrigins();

        return $options;
    }

    protected static function allowedOrigins(): array
    {
        $hosts = Cache::rememberForever('sites', function () {
        ...
        });

        return $hosts;
    }
}