Hi Konrad,

I think, the above VERSIONS resolved my issue. Thank you very much for the 
response. I tested my code and it is working now.
(I'm working for a company so, hard to share the code.)


Regards,
Aditya Borde

On Wednesday, October 11, 2017 at 12:00:40 AM UTC-4, Konrad Malawski wrote:
>
> Weird indeed;
>
> With regards to versions, please always use the latest - esp when 
> reporting issues like this.
> Please try 10.0.10 and 2.5.6 as I suggested above.
>
> Can you post a reproducer (repository) where we could reproduce this?
>
> —
> Konrad `kto.so` Malawski
> Akka <http://akka.io> @ Lightbend <http://lightbend.com>
>
> On 11 October 2017 at 10:22:19, bord...@gmail.com <javascript:> (
> bord...@gmail.com <javascript:>) wrote:
>
> Ok. I'm currently using  
> akkaHttp: "10.0.7", akka: "2.5.2". Is there an issue? Or What packages I 
> should be using? 
>
>
>
>
> On Tuesday, October 10, 2017 at 9:17:49 PM UTC-4, Konrad Malawski wrote: 
>>
>> Actually depend on akka-http 10.0.10 and akka 2.5.6 ;-)
>>
>> — 
>> Konrad `kto.so` Malawski
>> Akka <http://akka.io> @ Lightbend <http://lightbend.com>
>>
>> On 11 October 2017 at 10:15:34, bord...@gmail.com (bord...@gmail.com) 
>> wrote:
>>
>> Thanks for quick reply, Konrad.
>>
>> Actually, I'm using - these json parsing dependencies in Gradle. 
>>
>> compile group: 'org.json4s', name: 'json4s-native_2.12', version: '3.2.11'
>> compile group: 'org.json4s', name: 'json4s-jackson_2.12', version: 
>> '3.5.0.RC1'
>> compile group: 'de.heikoseeberger', name: 'akka-http-json4s_2.12', version: 
>> '1.17.0'
>>
>>
>> And, I modified the function actually, where I'm using 
>> *jackson.parseJson(info)* like this -
>>
>> Unmarshal(res.entity).to[String] map {
>>             info =>
>>               jackson.parseJson(info).children.length
>>
>> Am I doing something wrong here?  or something wrong in Parsing using 
>> *json4s*?
>>
>> Regards,
>> Aditya Borde
>>
>>
>> On Tuesday, October 10, 2017 at 9:04:22 PM UTC-4, Konrad Malawski wrote: 
>>>
>>> The exception is pretty clear about something being wrong with 
>>> dependencies:
>>>
>>> > java.lang.NoClassDefFoundError: 
>>> akka/http/scaladsl/model/ContentType$WithMissingCharset
>>>
>>> How do you configure this project? 
>>> What’s your dependencies / build file / build system?
>>>
>>> — 
>>> Konrad `kto.so` Malawski
>>> Akka <http://akka.io> @ Lightbend <http://lightbend.com>
>>>
>>> On 11 October 2017 at 10:02:49, bord...@gmail.com (bord...@gmail.com) 
>>> wrote:
>>>
>>> Hello, 
>>>
>>> I'm receiving below exception in my application , *It is still showing 
>>> me the result once though* and application crashes :
>>> This is my code : This failing at *complete :*
>>>
>>> Can someone help me on this :
>>>
>>>
>>> val resFuture = requests.map(x => (getFutureResp(req)))
>>>
>>>
>>> ////////
>>>
>>> //// I'm making `complete` on the above resFuture onComplete event.
>>>
>>> ///////
>>>
>>>
>>> def getFutureResp(req: HttpRequest)  = {
>>>
>>>   val responseFuture = 
>>> Source.single(Http().singleRequest(req)).runWith(Sink.head).flatMap{
>>>     resultFuture => checkRespEntity(resultFuture)
>>>   }
>>>
>>>   responseFuture
>>>
>>> }
>>>
>>>
>>>     futureFlags
>>>
>>> }
>>>
>>>
>>> def checkRespEntity(responseFuture: Future[HttpResponse]): 
>>> Future[Option[Int]] = {
>>>
>>>   val futureFlags : Future[Option[Int]] = responseFuture.flatMap {
>>>     res =>
>>>       res.status match {
>>>         case StatusCodes.OK =>
>>>           Unmarshal(res.entity).to[String] map {
>>>             info =>
>>>               info.length
>>>               }
>>>               else {
>>>                 res.entity.dataBytes.runWith(Sink.ignore)
>>>
>>>                 None
>>>               }
>>>           }
>>>
>>>         case _ =>  {
>>>           res.entity.dataBytes.runWith(Sink.ignore)
>>>           Future{ None }
>>>         }
>>>       }
>>>
>>>     }
>>>
>>>
>>> *Uncaught error from thread [myactor-akka.actor.default-dispatcher-5] 
>>> shutting down JVM since 'akka.jvm-exit-on-fatal-error' is enabled for 
>>> ActorSystem[myactor]*
>>> *java.lang.NoClassDefFoundError: 
>>> akka/http/scaladsl/model/ContentType$WithMissingCharset*
>>> *at 
>>> akka.http.scaladsl.marshalling.Marshal.$anonfun$toResponseFor$2(Marshal.scala:51)*
>>> *at scala.Option.flatMap(Option.scala:171)*
>>> *at 
>>> akka.http.scaladsl.marshalling.Marshal.$anonfun$toResponseFor$1(Marshal.scala:50)*
>>> *at 
>>> akka.http.scaladsl.util.FastFuture$.$anonfun$map$1(FastFuture.scala:23)*
>>> *at 
>>> akka.http.scaladsl.util.FastFuture$.strictTransform$1(FastFuture.scala:41)*
>>> *at 
>>> akka.http.scaladsl.util.FastFuture$.transformWith$extension1(FastFuture.scala:45)*
>>> *at 
>>> akka.http.scaladsl.util.FastFuture$.map$extension(FastFuture.scala:23)*
>>> *at 
>>> akka.http.scaladsl.marshalling.Marshal.toResponseFor(Marshal.scala:42)*
>>> *at 
>>> akka.http.scaladsl.marshalling.ToResponseMarshallable.apply(ToResponseMarshallable.scala:17)*
>>> *at 
>>> akka.http.scaladsl.marshalling.ToResponseMarshallable.apply$(ToResponseMarshallable.scala:16)*
>>> *at 
>>> akka.http.scaladsl.marshalling.ToResponseMarshallable$$anon$1.apply(ToResponseMarshallable.scala:22)*
>>> *at 
>>> akka.http.scaladsl.server.RequestContextImpl.complete(RequestContextImpl.scala:42)*
>>> *at 
>>> akka.http.scaladsl.server.directives.RouteDirectives.$anonfun$complete$1(RouteDirectives.scala:47)*
>>> *at 
>>> akka.http.scaladsl.server.StandardRoute$$anon$1.apply(StandardRoute.scala:19)*
>>> *at 
>>> akka.http.scaladsl.server.StandardRoute$$anon$1.apply(StandardRoute.scala:19)*
>>> *at 
>>> akka.http.scaladsl.server.directives.BasicDirectives.$anonfun$mapRouteResultWith$2(BasicDirectives.scala:67)*
>>> *at 
>>> akka.http.scaladsl.server.directives.ExecutionDirectives.handle$1(ExecutionDirectives.scala:51)*
>>> *at 
>>> akka.http.scaladsl.server.directives.ExecutionDirectives.$anonfun$handleRejections$4(ExecutionDirectives.scala:60)*
>>> *at 
>>> akka.http.scaladsl.server.directives.BasicDirectives$$anonfun$recoverRejectionsWith$1.applyOrElse(BasicDirectives.scala:91)*
>>> *at 
>>> akka.http.scaladsl.server.directives.BasicDirectives$$anonfun$recoverRejectionsWith$1.applyOrElse(BasicDirectives.scala:91)*
>>> *at 
>>> akka.http.scaladsl.server.directives.BasicDirectives.$anonfun$mapRouteResultWithPF$1(BasicDirectives.scala:79)*
>>> *at 
>>> akka.http.scaladsl.util.FastFuture$.strictTransform$1(FastFuture.scala:41)*
>>> *at 
>>> akka.http.scaladsl.util.FastFuture$.transformWith$extension1(FastFuture.scala:45)*
>>> *at 
>>> akka.http.scaladsl.util.FastFuture$.flatMap$extension(FastFuture.scala:26)*
>>> *at 
>>> akka.http.scaladsl.server.directives.BasicDirectives.$anonfun$mapRouteResultWith$2(BasicDirectives.scala:67)*
>>> *at 
>>> akka.http.scaladsl.server.directives.BasicDirectives.$anonfun$textract$2(BasicDirectives.scala:154)*
>>> *at 
>>> akka.http.scaladsl.server.directives.ExecutionDirectives.$anonfun$handleExceptions$2(ExecutionDirectives.scala:32)*
>>> *at 
>>> akka.http.scaladsl.server.Route$.$anonfun$asyncHandler$1(Route.scala:79)*
>>> *at akka.stream.impl.fusing.MapAsync$$anon$23.onPush(Ops.scala:1172)*
>>> *at 
>>> akka.stream.impl.fusing.GraphInterpreter.processPush(GraphInterpreter.scala:499)*
>>> *at 
>>> akka.stream.impl.fusing.GraphInterpreter.processEvent(GraphInterpreter.scala:462)*
>>> *at 
>>> akka.stream.impl.fusing.GraphInterpreter.execute(GraphInterpreter.scala:368)*
>>> *at 
>>> akka.stream.impl.fusing.GraphInterpreterShell.runBatch(ActorGraphInterpreter.scala:571)*
>>> *at 
>>> akka.stream.impl.fusing.GraphInterpreterShell$AsyncInput.execute(ActorGraphInterpreter.scala:457)*
>>> *at 
>>> akka.stream.impl.fusing.GraphInterpreterShell.processEvent(ActorGraphInterpreter.scala:546)*
>>> *at 
>>> akka.stream.impl.fusing.ActorGraphInterpreter.akka$stream$impl$fusing$ActorGraphInterpreter$$processEvent(ActorGraphInterpreter.scala:725)*
>>> *at 
>>> akka.stream.impl.fusing.ActorGraphInterpreter$$anonfun$receive$1.applyOrElse(ActorGraphInterpreter.scala:740)*
>>> *at akka.actor.Actor.aroundReceive(Actor.scala:513)*
>>> *at akka.actor.Actor.aroundReceive$(Actor.scala:511)*
>>> *at 
>>> akka.stream.impl.fusing.ActorGraphInterpreter.aroundReceive(ActorGraphInterpreter.scala:650)*
>>> *at akka.actor.ActorCell.receiveMessage(ActorCell.scala:527)*
>>> *at akka.actor.ActorCell.invoke(ActorCell.scala:496)*
>>> *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 akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)*
>>> *at 
>>> akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)*
>>> *at 
>>> akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)*
>>> *at 
>>> akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)*
>>> *Caused by: java.lang.ClassNotFoundException: 
>>> akka.http.scaladsl.model.ContentType$WithMissingCharset*
>>> *at java.net.URLClassLoader.findClass(URLClassLoader.java:381)*
>>> *at java.lang.ClassLoader.loadClass(ClassLoader.java:424)*
>>> *at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)*
>>> *at java.lang.ClassLoader.loadClass(ClassLoader.java:357)*
>>>
>>>
>>> Regards,
>>> Aditya Borde
>>> --
>>> >>>>>>>>>> Read the docs: http://akka.io/docs/
>>> >>>>>>>>>> Check the FAQ: 
>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>> >>>>>>>>>> Search the archives: 
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>>> --
>> >>>>>>>>>> Read the docs: http://akka.io/docs/
>> >>>>>>>>>> Check the FAQ: 
>> http://doc.akka.io/docs/akka/current/additional/faq.html
>> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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>> --
> >>>>>>>>>> Read the docs: http://akka.io/docs/
> >>>>>>>>>> Check the FAQ: 
> http://doc.akka.io/docs/akka/current/additional/faq.html
> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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-- 
>>>>>>>>>>      Read the docs: http://akka.io/docs/
>>>>>>>>>>      Check the FAQ: 
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>>      Search the archives: https://groups.google.com/group/akka-user
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