Fatal error: Uncaught Error: Class "Illuminate\Support\Manager" not found in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Notifications 2\ChannelManager.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminlte3\vendor\laravel\framework\src\Illuminate\Notifications 2\ChannelManager.php on line 12