Fatal error: Uncaught Error: Class 'Illuminate\Support\ServiceProvider' not found in /home/tmbeta/public_html/cebasptransparencia/vendor/laravel/slack-notification-channel/src/SlackChannelServiceProvider.php:9 Stack trace: #0 {main} thrown in /home/tmbeta/public_html/cebasptransparencia/vendor/laravel/slack-notification-channel/src/SlackChannelServiceProvider.php on line 9