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    Exception in thread "main" java.io.NotSerializableException: java.util.Hashtable$Enumerator at java.io.ObjectOutputStream.writeObject0(Unknown Source) at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source) at java.io.ObjectOutputStream.writeSe

Solutions on the web

via GitHub by lashchenko
, 1 year ago
pre-creation serialization check failed at [akka://TestSystem/user/IO-HTTP]
via Google Groups by vipin mandloi, 1 year ago
pre-creation serialization check failed at [akka://ClusterSystem/user/singleton/ConsumerActor]
java.io.NotSerializableException: spray.can.HttpExt	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)	at akka.serialization.JavaSerializer$$anonfun$toBinary$1.apply$mcV$sp(Serializer.scala:235)	at akka.serialization.JavaSerializer$$anonfun$toBinary$1.apply(Serializer.scala:235)	at akka.serialization.JavaSerializer$$anonfun$toBinary$1.apply(Serializer.scala:235)	at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)	at akka.serialization.JavaSerializer.toBinary(Serializer.scala:235)	at akka.actor.dungeon.Children$$anonfun$makeChild$2.apply(Children.scala:250)	at akka.actor.dungeon.Children$$anonfun$makeChild$2.apply(Children.scala:244)	at scala.collection.LinearSeqOptimized$class.forall(LinearSeqOptimized.scala:83)	at scala.collection.immutable.List.forall(List.scala:84)	at akka.actor.dungeon.Children$class.makeChild(Children.scala:244)	at akka.actor.dungeon.Children$class.attachChild(Children.scala:46)	at akka.actor.ActorCell.attachChild(ActorCell.scala:374)	at akka.actor.ActorSystemImpl.actorOf(ActorSystem.scala:571)	at spray.can.HttpExt.(Http.scala:152)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:422)	at akka.actor.ReflectiveDynamicAccess$$anonfun$createInstanceFor$2.apply(ReflectiveDynamicAccess.scala:32)	at scala.util.Try$.apply(Try.scala:192)	at akka.actor.ReflectiveDynamicAccess.createInstanceFor(ReflectiveDynamicAccess.scala:27)	at akka.actor.ExtensionKey.createExtension(Extension.scala:153)	at akka.actor.ActorSystemImpl.registerExtension(ActorSystem.scala:737)	at akka.actor.ExtensionId$class.apply(Extension.scala:79)	at akka.actor.ExtensionKey.apply(Extension.scala:149)	at akka.io.IO$.apply(IO.scala:26)	at spray.client.pipelining$.sendReceive(pipelining.scala:35)	at ua.akka.serialization.TestSprayApiService.pipeline(App.scala:28)	at ua.akka.serialization.TestSprayApiService.get(App.scala:43)	at ua.akka.serialization.SprayApiServiceActor$$anonfun$receive$1.applyOrElse(App.scala:68)	at akka.actor.Actor$class.aroundReceive(Actor.scala:484)	at ua.akka.serialization.SprayApiServiceActor.aroundReceive(App.scala:56)	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)	at akka.actor.ActorCell.invoke(ActorCell.scala:495)	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)	at akka.dispatch.Mailbox.run(Mailbox.scala:224)	at akka.dispatch.Mailbox.exec(Mailbox.scala:234)	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)