Fatal error: Uncaught PhpMqtt\Client\Exceptions\ConnectingToBrokerFailedException: [1000] Establishing a connection to the MQTT broker failed: Socket error [111]: Connection refused in /home/demo4ev/public_html/ride/vendor/php-mqtt/client/src/MqttClient.php:217 Stack trace: #0 /home/demo4ev/public_html/ride/vendor/php-mqtt/client/src/MqttClient.php(130): PhpMqtt\Client\MqttClient->establishSocketConnection() #1 /home/demo4ev/public_html/ride/test.php(27): PhpMqtt\Client\MqttClient->connect() #2 {main} thrown in /home/demo4ev/public_html/ride/vendor/php-mqtt/client/src/MqttClient.php on line 217