javax.ws.rs.WebApplicationException: HTTP 400 Bad Request

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javax.ws.rs.WebApplicationException: HTTP 400 Bad Request
at ru.semiot.platform.apigateway.beans.impl.DeviceProxyService.lambda$executeCommand$0(DeviceProxyService.java:58)
at rx.internal.operators.OperatorMap$1.onNext(OperatorMap.java:55)
at rx.internal.operators.NotificationLite.accept(NotificationLite.java:150)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.pollQueue(OperatorObserveOn.java:205)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber$2.call(OperatorObserveOn.java:159)
at rx.schedulers.ExecutorScheduler$ExecutorAction.run(ExecutorScheduler.java:173)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

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