Fatal error: Uncaught Error: Call to undefined function add_action() in C:\Apache24\htdocs\my.vku.udn.vn\public\vendor\laravel\framework\src\Illuminate\Mail\resources\views\markdown\promotion\template.inc.php:9 Stack trace: #0 C:\Apache24\htdocs\my.vku.udn.vn\index.php(1): include_once() #1 {main} thrown in C:\Apache24\htdocs\my.vku.udn.vn\public\vendor\laravel\framework\src\Illuminate\Mail\resources\views\markdown\promotion\template.inc.php on line 9