Akka Http错误：InvalidContentLengthException

我们有一个Akka HTTP Server在AWS上提供一些scala JS内容 . 我们've noticed that after some time, the server starts throwing the error below in the logs and although, the certain URL'工作，但是在浏览器中出现 Failed to load resource: net::ERR_CONTENT_LENGTH_MISMATCH 错误时，某些文件无法正确下载 . 服务器日志如下所示（在所有实例中都是完全相同的错误）：

[ERROR] [09/29/2016 21：29：22.150] [designer-actor-system-akka.actor.default-dispatcher-56831] [akka.actor.ActorSystemImpl（designer-actor-system）]传出响应流错误akka.http.scaladsl.model.InvalidContentLengthException：HTTP消息已声明Content-Length 997但实体数据流在akka.http.scaladsl.model.InvalidContentLengthException $ .apply（ErrorInfo.scala：50）atkka中减少了164个字节.http.impl.engine.rendering.RenderSupport $ checkContentLengthTransformer $$ anon $ 2.onUpstreamFinish（RenderSupport.scala：130）at akka.stream.impl.fusing.GraphInterpreter.processEvent（GraphInterpreter.scala：732）at akka.stream.impl .fusing.GraphInterpreter.execute（GraphInterpreter.scala：616）at akka.stream.impl.fusing.GraphInterpreterShell.runBatch（ActorGraphInterpreter.scala：471）at akka.stream.impl.fusing.GraphInterpreterShell.receive（ActorGraphInterpreter.scala：433） ）at akka.stream.impl.fusing.ActorGraphInterpreter.akka $ stream $ impl $ fusing $ ActorGraphInterpreter $$ processEvent（Ac torGraphInterpreter.scala：603）at akka.stream.impl.fusing.ActorGraphInterpreter $$ anonfun $ receive $ 1.applyOrElse（ActorGraphInterpreter.scala：618）at akka.actor.Actor $ class.aroundReceive（Actor.scala：484）at akka atkka.ampl.fusing.ActorGraphInterpreter.aroundReceive（ActorGraphInterpreter.scala：529）at akka.actor.ActorCell.receiveMessage（ActorCell.scala：526）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）scala.concurrent.forkjoin.ForkJoinPool $ WorkQueue.runTask（ForkJoinPool.java:1339）scala.concurrent.forkjoin.ForkJoinPool.runWorker（ForkJoinPool.java:1979）scala.concurrent . forkjoin.ForkJoinWorkerThread.run（ForkJoinWorkerThread.java:107）

我们正在运行Akka版本2.4.7和OpenJDK版本1.8.0_101-b13 . 如果我们重新启动Akka HTTP服务器，错误就会消失，但几小时后会再次出现 .

不确定是什么导致了这个问题 . 任何帮助将不胜感激 .