07:19:29,489 PM [default-pekko.actor.default-dispatcher-6] [INFO] Slf4jLogger - Slf4jLogger started
07:19:31,566 PM [default-scheduler-1] [WARN] NetconfDataTreeServiceActor - Haven't received any message for 2 seconds, cancelling transaction and stopping actor
07:19:31,568 PM [default-pekko.actor.default-dispatcher-7] [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:1103)
	at org.opendaylight.netconf.topology.singleton.impl.actors.NetconfDataTreeServiceActor.invokeRpcCall(NetconfDataTreeServiceActor.java:156)
	at org.opendaylight.netconf.topology.singleton.impl.actors.NetconfDataTreeServiceActor.onReceive(NetconfDataTreeServiceActor.java:124)
	at org.apache.pekko.actor.UntypedAbstractActor$$anonfun$receive$1.applyOrElse(AbstractActor.scala:341)
	at org.apache.pekko.actor.Actor.aroundReceive(Actor.scala:547)
	at org.apache.pekko.actor.Actor.aroundReceive$(Actor.scala:545)
	at org.apache.pekko.actor.AbstractActor.aroundReceive(AbstractActor.scala:229)
	at org.apache.pekko.actor.ActorCell.receiveMessage(ActorCell.scala:590)
	at org.apache.pekko.actor.ActorCell.invoke(ActorCell.scala:557)
	at org.apache.pekko.testkit.CallingThreadDispatcher.process$1(CallingThreadDispatcher.scala:290)
	at org.apache.pekko.testkit.CallingThreadDispatcher.runQueue(CallingThreadDispatcher.scala:325)
	at org.apache.pekko.testkit.CallingThreadDispatcher.dispatch(CallingThreadDispatcher.scala:244)
	at org.apache.pekko.actor.dungeon.Dispatch.sendMessage(Dispatch.scala:172)
	at org.apache.pekko.actor.dungeon.Dispatch.sendMessage$(Dispatch.scala:166)
	at org.apache.pekko.actor.ActorCell.sendMessage(ActorCell.scala:420)
	at org.apache.pekko.actor.Cell.sendMessage(ActorCell.scala:336)
	at org.apache.pekko.actor.Cell.sendMessage$(ActorCell.scala:335)
	at org.apache.pekko.actor.ActorCell.sendMessage(ActorCell.scala:420)
	at org.apache.pekko.actor.LocalActorRef.$bang(ActorRef.scala:458)
	at org.apache.pekko.actor.Scheduler$$anon$6.run(Scheduler.scala:457)
	at org.apache.pekko.dispatch.TaskInvocation.run(AbstractDispatcher.scala:59)
	at org.apache.pekko.testkit.CallingThreadDispatcher.executeTask(CallingThreadDispatcher.scala:249)
	at org.apache.pekko.dispatch.MessageDispatcher.unbatchedExecute(AbstractDispatcher.scala:177)
	at org.apache.pekko.dispatch.BatchingExecutor.execute(BatchingExecutor.scala:143)
	at org.apache.pekko.dispatch.BatchingExecutor.execute$(BatchingExecutor.scala:134)
	at org.apache.pekko.dispatch.MessageDispatcher.execute(AbstractDispatcher.scala:107)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(LightArrayRevolverScheduler.scala:384)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$3.executeBucket$1(LightArrayRevolverScheduler.scala:332)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$3.nextTick(LightArrayRevolverScheduler.scala:336)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$3.run(LightArrayRevolverScheduler.scala:288)
	at java.base/java.lang.Thread.run(Thread.java:1583)
07:19:31,586 PM [default-scheduler-1] [WARN] NetconfDataTreeServiceActor - Haven't received any message for 2 seconds, cancelling transaction and stopping actor
07:19:31,586 PM [default-pekko.actor.default-dispatcher-7] [ERROR] OneForOneStrategy - Cannot invoke "com.google.common.util.concurrent.ListenableFuture.addListener(java.lang.Runnable, java.util.concurrent.Executor)" because "future" is null
java.lang.NullPointerException: Cannot invoke "com.google.common.util.concurrent.ListenableFuture.addListener(java.lang.Runnable, java.util.concurrent.Executor)" because "future" is null
	at com.google.common.util.concurrent.Futures.addCallback(Futures.java:1103)
	at org.opendaylight.netconf.topology.singleton.impl.actors.NetconfDataTreeServiceActor.invokeRpcCall(NetconfDataTreeServiceActor.java:156)
	at org.opendaylight.netconf.topology.singleton.impl.actors.NetconfDataTreeServiceActor.onReceive(NetconfDataTreeServiceActor.java:124)
	at org.apache.pekko.actor.UntypedAbstractActor$$anonfun$receive$1.applyOrElse(AbstractActor.scala:341)
	at org.apache.pekko.actor.Actor.aroundReceive(Actor.scala:547)
	at org.apache.pekko.actor.Actor.aroundReceive$(Actor.scala:545)
	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$1(CallingThreadDispatcher.scala:290)
	at org.apache.pekko.testkit.CallingThreadDispatcher.runQueue(CallingThreadDispatcher.scala:325)
	at org.apache.pekko.testkit.CallingThreadDispatcher.dispatch(CallingThreadDispatcher.scala:244)
	at org.apache.pekko.actor.dungeon.Dispatch.sendMessage(Dispatch.scala:172)
	at org.apache.pekko.actor.dungeon.Dispatch.sendMessage$(Dispatch.scala:166)
	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$(ActorCell.scala:335)
	at org.apache.pekko.actor.ActorCell.sendMessage(ActorCell.scala:420)
	at org.apache.pekko.actor.LocalActorRef.$bang(ActorRef.scala:458)
	at org.apache.pekko.actor.Scheduler$$anon$6.run(Scheduler.scala:457)
	at org.apache.pekko.dispatch.TaskInvocation.run(AbstractDispatcher.scala:59)
	at org.apache.pekko.testkit.CallingThreadDispatcher.executeTask(CallingThreadDispatcher.scala:249)
	at org.apache.pekko.dispatch.MessageDispatcher.unbatchedExecute(AbstractDispatcher.scala:177)
	at org.apache.pekko.dispatch.BatchingExecutor.execute(BatchingExecutor.scala:143)
	at org.apache.pekko.dispatch.BatchingExecutor.execute$(BatchingExecutor.scala:134)
	at org.apache.pekko.dispatch.MessageDispatcher.execute(AbstractDispatcher.scala:107)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(LightArrayRevolverScheduler.scala:384)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$3.executeBucket$1(LightArrayRevolverScheduler.scala:332)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$3.nextTick(LightArrayRevolverScheduler.scala:336)
	at org.apache.pekko.actor.LightArrayRevolverScheduler$$anon$3.run(LightArrayRevolverScheduler.scala:288)
	at java.base/java.lang.Thread.run(Thread.java:1583)
07:19:31,605 PM [default-scheduler-1] [WARN] NetconfDataTreeServiceActor - Haven't received any message for 2 seconds, cancelling transaction and stopping actor
07:19:31,606 PM [default-pekko.actor.default-dispatcher-7] [INFO] DeadLetterActorRef -  pekkoDeadLetter Message [org.opendaylight.netconf.topology.singleton.messages.rpc.InvokeRpcMessageReply] from TestActor[pekko://default/user/$$E] to Actor[pekko://default/deadLetters] was not delivered. [1] dead letters encountered. If this is not an expected behavior then Actor[pekko://default/deadLetters] may have terminated unexpectedly. This logging can be turned off or adjusted with configuration settings 'pekko.log-dead-letters' and 'pekko.log-dead-letters-during-shutdown'.
07:19:31,606 PM [default-pekko.actor.default-dispatcher-7] [INFO] DeadLetterActorRef -  pekkoDeadLetter Message [org.opendaylight.netconf.topology.singleton.messages.rpc.InvokeRpcMessageReply] from TestActor[pekko://default/user/$$E] to Actor[pekko://default/deadLetters] was not delivered. [2] 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'.
07:19:31,630 PM [default-pekko.actor.default-dispatcher-6] [INFO] CoordinatedShutdown - Running CoordinatedShutdown with reason [ActorSystemTerminateReason]