Fatal error: Uncaught Error: Class "PhpMqtt\Client\MessageProcessors\Mqtt31MessageProcessor" not found in /home/roltechszq/addax/addax/vendor/php-mqtt/client/src/MessageProcessors/Mqtt311MessageProcessor.php:17 Stack trace: #0 {main} thrown in /home/roltechszq/addax/addax/vendor/php-mqtt/client/src/MessageProcessors/Mqtt311MessageProcessor.php on line 17