Fatal error: Uncaught Error: Class 'Longman\TelegramBot\Commands\SystemCommand' not found in /var/www/support.maxperutzlabs.ac.at/api/tgbot/Commands/Group/LeftchatmemberCommand.php:28 Stack trace: #0 {main} thrown in /var/www/support.maxperutzlabs.ac.at/api/tgbot/Commands/Group/LeftchatmemberCommand.php on line 28