I keep on getting this error when I restart my IntelliJ to run unit test on 
my reactive streams: 

Uncaught error from thread [KafkaAvroSpec-akka.kafka.default-dispatcher-5] 
shutting down JVM since 'akka.jvm-exit-on-fatal-error' is enabled for 
ActorSystem[KafkaAvroSpec]
java.lang.NoSuchMethodError: akka.kafka.internal.SingleSourceLogic.
getStageActor(Lscala/Function1;)Lakka/stream/stage/
GraphStageLogic$StageActor;
 at akka.kafka.internal.SingleSourceLogic.preStart(SingleSourceLogic.scala:
52)
 at akka.stream.impl.fusing.GraphInterpreter.init(GraphInterpreter.scala:468
)
 at akka.stream.impl.fusing.GraphInterpreterShell.init(ActorGraphInterpreter
.scala:365)
 at akka.stream.impl.fusing.ActorGraphInterpreter.tryInit(
ActorGraphInterpreter.scala:504)
 at akka.stream.impl.fusing.ActorGraphInterpreter.preStart(
ActorGraphInterpreter.scala:541)
 at akka.actor.Actor$class.aroundPreStart(Actor.scala:489)
 at akka.stream.impl.fusing.ActorGraphInterpreter.aroundPreStart(
ActorGraphInterpreter.scala:495)
 at akka.actor.ActorCell.create(ActorCell.scala:590)
 at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:461)
 at akka.actor.ActorCell.systemInvoke(ActorCell.scala:483)
 at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:282)
 at akka.dispatch.Mailbox.run(Mailbox.scala:223)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.
java:1142)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.
java:617)
 at java.lang.Thread.run(Thread.java:745)

After meddling with the Build.sbt, it would then work, but once I restart 
it would failed again.  Its draining quite a bit of time trying to unit 
test right now.  Does anyone know what may be the cause of this? 

So far the only way I have found is to remove the reactive-kafka 
dependency, save, and then add it back again.  But this isn't consistent. 

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