Fatal error: Uncaught Error: Undefined constant 'app\controller\apple\app\view\holidaycampaign\HolidayCampaign' in /var/www/html/app/controller/apple/applecampaign.php on line 13

Error: Undefined constant 'app\controller\apple\app\view\holidaycampaign\HolidayCampaign' in /var/www/html/app/controller/apple/applecampaign.php on line 13

Call Stack:
    0.0001     371680   1. {main}() /var/www/html/public/index.php:0
    0.0005     405376   2. Main->run() /var/www/html/public/index.php:152
    0.0238     652128   3. core\router\Router->dispatch() /var/www/html/public/index.php:146
    0.0240     719872   4. core\router\route\Custom->dispatch() /var/www/html/core/router/router.php:59
    0.0240     720336   5. core\router\route\Custom->launch() /var/www/html/core/router/route/custom.php:318
    0.0243     721976   6. core\controller\Factory::build() /var/www/html/core/router/route/custom.php:84
    0.0243     722040   7. class_exists() /var/www/html/core/controller/factory.php:18
    0.0243     722104   8. spl_autoload_call() /var/www/html/core/controller/factory.php:18
    0.0243     722168   9. {closure:/var/www/html/bootstrap.php:91-93}() /var/www/html/core/controller/factory.php:18
    0.0243     722168  10. core\loader\Facade::load() /var/www/html/bootstrap.php:92
    0.0243     722712  11. core\loader\Loader->load() /var/www/html/core/loader/facade.php:22
    0.0244     724448  12. include('/var/www/html/app/controller/apple/applecampaign.php') /var/www/html/core/loader/loader.php:20