Fatal error: Uncaught Error: Class "Illuminate\Support\Manager" not found in /srv/www/sites/public/starter-projects/vendor/laravel/framework/src/Illuminate/Notifications/ChannelManager.php:12 Stack trace: #0 {main} thrown in /srv/www/sites/public/starter-projects/vendor/laravel/framework/src/Illuminate/Notifications/ChannelManager.php on line 12