nfrtool-comms_1 | java.io.FileNotFoundException: ./files/app-attr.yml (No such file or directory)nfrtool-comms_1 | at java.io.FileInputStream.open0(Native Method)nfrtool-comms_1 | at java.io.FileInputStream.open(FileInputStream.java:195)nfrtool-comms_1 | at java.io.FileInputStream.<init>(FileInputStream.java:138)nfrtool-comms_1 | at java.io.FileInputStream.<init>(FileInputStream.java:93)nfrtool-comms_1 | at java.io.FileReader.<init>(FileReader.java:58)nfrtool-comms_1 | at utils.FileUtils.getYmlNode(FileUtils.java:70)nfrtool-comms_1 | at utils.FileUtils.getYmlNodeScalar(FileUtils.java:84)nfrtool-comms_1 | at resourceManager.ResourceManagerCommsTask.lambda$messageArrived$6(ResourceManagerCommsTask.java:162)nfrtool-comms_1 | at java.util.ArrayList.forEach(ArrayList.java:1257)nfrtool-comms_1 | at resourceManager.ResourceManagerCommsTask.messageArrived(ResourceManagerCommsTask.java:158)nfrtool-comms_1 | at org.eclipse.paho.client.mqttv3.internal.CommsCallback.deliverMessage(CommsCallback.java:519)nfrtool-comms_1 | at org.eclipse.paho.client.mqttv3.internal.CommsCallback.handleMessage(CommsCallback.java:417)nfrtool-comms_1 | at org.eclipse.paho.client.mqttv3.internal.CommsCallback.run(CommsCallback.java:214)nfrtool-comms_1 | at java.lang.Thread.run(Thread.java:748)nfrtool-comms_1 | An exception occurred when processing the received MQTT messagenfrtool-comms_1 | java.lang.NullPointerExceptionnfrtool-comms_1 | at utils.FileUtils.getYmlNodeScalar(FileUtils.java:86)nfrtool-comms_1 | at resourceManager.ResourceManagerCommsTask.lambda$messageArrived$6(ResourceManagerCommsTask.java:162)nfrtool-comms_1 | at java.util.ArrayList.forEach(ArrayList.java:1257)nfrtool-comms_1 | at resourceManager.ResourceManagerCommsTask.messageArrived(ResourceManagerCommsTask.java:158)nfrtool-comms_1 | at org.eclipse.paho.client.mqttv3.internal.CommsCallback.deliverMessage(CommsCallback.java:519)nfrtool-comms_1 | at org.eclipse.paho.client.mqttv3.internal.CommsCallback.handleMessage(CommsCallback.java:417)nfrtool-comms_1 | at org.eclipse.paho.client.mqttv3.internal.CommsCallback.run(CommsCallback.java:214)nfrtool-comms_1 | at java.lang.Thread.run(Thread.java:748)