Unable to connect with MQTT Broker

[kavidriod]

2020-03-28 10:15:09.510 10325-10325/com.example.hellomqtt D/MQTT: Build.VERSION.SDK_INT  27
2020-03-28 10:15:09.526 10325-10325/com.example.hellomqtt D/MQTT: Created mqtt service...
2020-03-28 10:15:09.529 10325-10325/com.example.hellomqtt D/MQTT: SensorsMqtService.onStartCommand.getAction mqtt_connect
2020-03-28 10:15:09.529 10325-10325/com.example.hellomqtt D/MQTT: SensorsMqtService.connectToServer 
2020-03-28 10:15:09.530 10325-10325/com.example.hellomqtt D/MQTT: Client: serverURI tcp://broker.mqttdashboard.com:1883
2020-03-28 10:15:09.530 10325-10325/com.example.hellomqtt D/MQTT: Client: clientId EMULATOR29X3X4X0
2020-03-28 10:15:09.530 10325-10325/com.example.hellomqtt D/MQTT: SensorsMqtService.connectToServer.mqttClient com.example.hellomqtt.mqtt.CustomMqttClient@4803a82
2020-03-28 10:15:09.605 10325-10348/com.example.hellomqtt I/zygote: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0
2020-03-28 10:15:09.605 10325-10348/com.example.hellomqtt I/OpenGLRenderer: Initialized EGL, version 1.4
2020-03-28 10:15:09.605 10325-10348/com.example.hellomqtt D/OpenGLRenderer: Swap behavior 1
2020-03-28 10:15:09.605 10325-10348/com.example.hellomqtt W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
2020-03-28 10:15:09.605 10325-10348/com.example.hellomqtt D/OpenGLRenderer: Swap behavior 0
2020-03-28 10:15:09.614 10325-10348/com.example.hellomqtt D/EGL_emulation: eglCreateContext: 0xa0a95f20: maj 3 min 0 rcv 3
2020-03-28 10:15:09.655 10325-10348/com.example.hellomqtt D/EGL_emulation: eglMakeCurrent: 0xa0a95f20: ver 3 0 (tinfo 0x9e1bf8b0)
2020-03-28 10:15:09.744 10325-10348/com.example.hellomqtt D/EGL_emulation: eglMakeCurrent: 0xa0a95f20: ver 3 0 (tinfo 0x9e1bf8b0)
2020-03-28 10:15:09.938 10325-10325/com.example.hellomqtt D/MQTT: traceDebug clearArrivedMessages: clearing the table of tcp://broker.mqttdashboard.com:1883:EMULATOR29X3X4X0:com.example.hellomqtt messages
2020-03-28 10:15:09.938 10325-10325/com.example.hellomqtt D/MQTT: traceDebug clearArrivedMessages: rows affected = 0
2020-03-28 10:15:09.939 10325-10325/com.example.hellomqtt D/MQTT: traceDebug Connecting {tcp://broker.mqttdashboard.com:1883} as {EMULATOR29X3X4X0}
2020-03-28 10:15:09.939 10325-10325/com.example.hellomqtt D/MQTT: traceDebug Do Real connect!
2020-03-28 10:15:09.939 10325-10325/com.example.hellomqtt D/MQTT: traceDebug Internal network status receive.
2020-03-28 10:15:09.939 10325-10325/com.example.hellomqtt D/MQTT: traceDebug Reconnect for Network recovery.
2020-03-28 10:15:09.939 10325-10325/com.example.hellomqtt D/MQTT: traceDebug Online,reconnect.
2020-03-28 10:15:09.939 10325-10325/com.example.hellomqtt D/MQTT: traceDebug Reconnect to server, client size=1
2020-03-28 10:15:09.939 10325-10325/com.example.hellomqtt D/MQTT: traceDebug EMULATOR29X3X4X0/tcp://broker.mqttdashboard.com:1883
2020-03-28 10:15:09.939 10325-10325/com.example.hellomqtt D/MQTT: traceDebug The client is connecting. Reconnect return directly.
2020-03-28 10:15:21.447 10325-10353/com.example.hellomqtt D/AlarmPingSender: Unregister alarmreceiver to MqttServiceEMULATOR29X3X4X0
2020-03-28 10:15:32.409 10325-10353/com.example.hellomqtt D/AlarmPingSender: Unregister alarmreceiver to MqttServiceEMULATOR29X3X4X0
2020-03-28 10:15:32.463 10325-10325/com.example.hellomqtt D/MQTT: traceError connect fail, call connect to reconnect.reason:Unable to connect to server
2020-03-28 10:15:32.465 10325-10325/com.example.hellomqtt W/MQTT: Error on connecting to server... retry?: Unable to connect to server (32103) - java.net.ConnectException: failed to connect to broker.mqttdashboard.com/18.184.201.114 (port 1883) from /192.168.232.2 (port 46408) after 30000ms: isConnected failed: ECONNREFUSED (Connection refused)
2020-03-28 10:15:32.469 10325-10325/com.example.hellomqtt D/MQTT: traceDebug disconnect()
2020-03-28 10:15:32.469 10325-10325/com.example.hellomqtt D/MQTT: traceError not connected
2020-03-28 10:15:32.469 10325-10325/com.example.hellomqtt D/MQTT: Disconnected from server attempt success...