NoSuchMethodError: Akka 2.5-M2 and Akka-Http 10.0.4

[Rob Crawford]

From my understanding of the binary compatibility statement, these should work together, but after I start an Akka-http server, I get this exception:

java.lang.NoSuchMethodError: akka.actor.ActorCell.addFunctionRef(Lscala/Function2;)Lakka/actor/FunctionRef;

at akka.stream.stage.GraphStageLogic$StageActor.<init>(GraphStage.scala:142)

at akka.stream.stage.GraphStageLogic.getStageActor(GraphStage.scala:929)

...

Now, I'm starting this from inside an actor, but didn't think that would be an issue. I've tried starting the Http server from main(), but it throws the same exception. To start it, I'm doing this:

ActorSystem system = getContext().system();

final HttpBinding myServer = new HttpBinding();
myServer.startServer("localhost", 8080, ServerSettings.create(system), system);

The HttpBinding class is:

public class HttpBinding extends HttpApp {

    protected Route route() {
        return path("hello", () ->
                get(() ->
                        complete("<h1>Say hello to akka-http</h1>")
                )
        );
    }
}

I've checked the dependencies, and nothing's brought in an older version of akka. I'm using the Scala 2.12 versions of everything. From my build.gradle:

compile group: 'com.typesafe.akka', name: 'akka-actor_2.12', version: '2.5-M2'
compile group: 'com.typesafe.akka', name: 'akka-persistence_2.12', version: '2.5-M2'
compile group: 'com.typesafe.akka', name: 'akka-slf4j_2.12', version: '2.5-M2'

compile group: 'com.typesafe.akka', name: 'akka-http_2.12', version: '10.0.4'

The only place I've seen a similar exception discussed was a StackOverflow question that involved Play, and I'm not using Play. Any suggestions on 
where to look for the problem? Or should I just wait for the final release of Akka 2.5 and Akka-Http to catch up?

Thanks!

[Patrik Nordwall]

The line numbers doesn't match 2.5-M2.

See https://github.com/akka/akka/blob/v2.5-M2/akka-stream/src/main/scala/akka/stream/stage/GraphStage.scala#L142

It looks like you are using 2.4.17 of akka-stream

See https://github.com/akka/akka/blob/v2.4.17/akka-stream/src/main/scala/akka/stream/stage/GraphStage.scala#L142

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Patrik Nordwall
Akka Tech Lead
Lightbend -  Reactive apps on the JVM
Twitter: @patriknw

[Rob Crawford]

That was it! Thanks -- I'll remember to triple-check the transitive dependencies from now on! 

[Patrik Nordwall]

You're welcome.

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[Sunil Mandowara]

its works after including akka-stream dependency (transitive) with never version.

  "com.typesafe.akka" %% "akka-http" % "10.0.10",

  "com.typesafe.akka" %% "akka-actor" % "2.5.4",

  "com.typesafe.akka" %% "akka-stream" % "2.5.4",  

  "com.typesafe.akka" %% "akka-http-spray-json" % "10.0.10"