Fatal error: Uncaught Error: Class 'Illuminate\Support\ServiceProvider' not found in C:\laragon\www\silkroad-laravel\vendor\laravel\slack-notification-channel\src\SlackChannelServiceProvider.php:9 Stack trace: #0 {main} thrown in C:\laragon\www\silkroad-laravel\vendor\laravel\slack-notification-channel\src\SlackChannelServiceProvider.php on line 9