Fatal error: Uncaught Error: Class 'PhpMqtt\Client\PendingMessage' not found in /home/diligence/public_html/sigma-power/vendor/php-mqtt/client/src/SubscribeRequest.php:12
Stack trace:
#0 {main}
thrown in /home/diligence/public_html/sigma-power/vendor/php-mqtt/client/src/SubscribeRequest.php on line 12