Fatal error: Uncaught Error: Class "Maknz\Slack\Object\CompositionObject" not found in C:\xampp\htdocs\snipe-it\vendor\alek13\slack\src\Object\OptionGroup.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\snipe-it\vendor\alek13\slack\src\Object\OptionGroup.php on line 7