Fatal error: Uncaught Error: Class "PhpMqtt\Client\PendingMessage" not found in /var/www/html/20240806165554/vendor/php-mqtt/client/src/PublishedMessage.php:13 Stack trace: #0 {main} thrown in /var/www/html/20240806165554/vendor/php-mqtt/client/src/PublishedMessage.php on line 13