01:15:10,768 AM [default-pekko.actor.default-dispatcher-4] [INFO] Slf4jLogger - Slf4jLogger started
01:15:12,929 AM [default-scheduler-1] [WARN] NetconfDataTreeServiceActor - Haven't received any message for 2 seconds, cancelling transaction and stopping actor
01:15:12,940 AM [default-pekko.actor.default-dispatcher-5] [ERROR] OneForOneStrategy - Cannot invoke "com.google.common.util.concurrent.ListenableFuture.addListener(java.lang.Runnable, java.util.concurrent.Executor)" because "future" is null
java.lang.NullPointerException: Cannot invoke "com.google.common.util.concurrent.ListenableFuture.addListener(java.lang.Runnable, java.util.concurrent.Executor)" because "future" is null
	at com.google.common.util.concurrent.Futures.addCallback(Futures.java:1098)
	at org.opendaylight.netconf.topology.singleton.impl.actors.NetconfDataTreeServiceActor.invokeRpcCall(NetconfDataTreeServiceActor.java:123)
	at org.opendaylight.netconf.topology.singleton.impl.actors.NetconfDataTreeServiceActor.onReceive(NetconfDataTreeServiceActor.java:92)
	at org.apache.pekko.actor.UntypedAbstractActor$$anon$1.applyOrElse(AbstractActor.scala:341)
	at org.apache.pekko.actor.Actor.aroundReceive(Actor.scala:547)
	at org.apache.pekko.actor.Actor.aroundReceive$(Actor.scala:481)
	at org.apache.pekko.actor.AbstractActor.aroundReceive(AbstractActor.scala:229)
	at org.apache.pekko.actor.ActorCell.receiveMessage(ActorCell.scala:590)
	at org.apache.pekko.actor.ActorCell.invoke(ActorCell.scala:557)
	at org.apache.pekko.testkit.CallingThreadDispatcher.process$1(CallingThreadDispatcher.scala:289)
	at org.apache.pekko.testkit.CallingThreadDispatcher.runQueue(CallingThreadDispatcher.scala:324)
	at org.apache.pekko.testkit.CallingThreadDispatcher.dispatch(CallingThreadDispatcher.scala:243)
	at org.apache.pekko.actor.dungeon.Dispatch.sendMessage(Dispatch.scala:177)
	at org.apache.pekko.actor.dungeon.Dispatch.sendMessage$(Dispatch.scala:47)
	at org.apache.pekko.actor.ActorCell.sendMessage(ActorCell.scala:420)
	at org.apache.pekko.actor.Cell.sendMessage(ActorCell.scala:336)
	at org.apache.pekko.actor.Cell.sendMessage$(ActorCell.scala:251)
	at org.apache.pekko.actor.ActorCell.sendMessage(ActorCell.scala:420)
	at org.apache.pekko.actor.LocalActorRef.$bang(ActorRef.scala:458)
	at org.apache.pekko.actor.Scheduler$$anon$6.run(Scheduler.scala:434)
	at org.apache.pekko.dispatch.TaskInvocation.run(AbstractDispatcher.scala:59)
	at org.apache.pekko.testkit.CallingThreadDispatcher.executeTask(CallingThreadDispatcher.scala:248)
	at org.apache.pekko.dispatch.MessageDispatcher.unbatchedExecute(AbstractDispatcher.scala:178)
	at org.apache.pekko.dispatch.BatchingExecutor.execute(BatchingExecutor.scala:142)
	at org.apache.pekko.dispatch.BatchingExecutor.execute$(BatchingExecutor.scala:64)
	at org.apache.pekko.dispatch.MessageDispatcher.execute(AbstractDispatcher.scala:107)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(LightArrayRevolverScheduler.scala:387)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$1.executeBucket$1(LightArrayRevolverScheduler.scala:333)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$1.nextTick(LightArrayRevolverScheduler.scala:337)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$1.run(LightArrayRevolverScheduler.scala:289)
	at java.base/java.lang.Thread.run(Thread.java:1583)
01:15:12,951 AM [default-scheduler-1] [WARN] NetconfDataTreeServiceActor - Haven't received any message for 2 seconds, cancelling transaction and stopping actor
01:15:12,962 AM [default-pekko.actor.default-dispatcher-5] [INFO] DeadLetterActorRef -  pekkoDeadLetter Message [org.opendaylight.netconf.topology.singleton.messages.rpc.InvokeRpcMessageReply] from TestActor[pekko://default/user/$$D] to Actor[pekko://default/deadLetters] was not delivered. [1] dead letters encountered. If this is not an expected behavior then Actor[pekko://default/deadLetters] may have terminated unexpectedly. This logging can be turned off or adjusted with configuration settings 'pekko.log-dead-letters' and 'pekko.log-dead-letters-during-shutdown'.
01:15:13,12 AM [default-pekko.actor.default-dispatcher-5] [INFO] CoordinatedShutdown - Running CoordinatedShutdown with reason [ActorSystemTerminateReason]