java.lang.NullPointerException

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  • java.lang.NullPointerException at org.eclipse.paho.client.mqttv3.internal.ExceptionHelper.createMqttException(ExceptionHelper.java:38) at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:664) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.NullPointerException at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.receiveHandshakeResponse(WebSocketHandshake.java:133) at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketHandshake.execute(WebSocketHandshake.java:74) at org.eclipse.paho.client.mqttv3.internal.websocket.WebSocketNetworkModule.start(WebSocketNetworkModule.java:78) at org.eclipse.paho.client.mqttv3.internal.ClientComms$ConnectBG.run(ClientComms.java:650)
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