EntityStreamSizeException after some running time

[fagossa]

[reading logs] Upstream failed.
background log: info: akka.http.scaladsl.model.EntityStreamSizeException: EntityStreamSizeException: actual entity size (None) exceeded content length limit (8388608 bytes)! You can configure this by setting akka.http.[server|client].parsing.max-content-length or calling HttpEntity.withSizeLimit before materializing the dataBytes stream.
background log: info: at akka.http.scaladsl.model.HttpEntity$Limitable$$anon$1.onPush(HttpEntity.scala:620) ~[akka-http-core_2.11-2.4.9.jar:na]
background log: info: at akka.stream.impl.fusing.GraphInterpreter.processPush(GraphInterpreter.scala:747) ~[akka-stream_2.11-2.4.12.jar:na]
background log: info: at akka.stream.impl.fusing.GraphInterpreter.execute(GraphInterpreter.scala:649) ~[akka-stream_2.11-2.4.12.jar:na]
background log: info: at akka.stream.impl.fusing.GraphInterpreterShell.runBatch(ActorGraphInterpreter.scala:471) ~[akka-stream_2.11-2.4.12.jar:na]
background log: info: at akka.stream.impl.fusing.GraphInterpreterShell.receive(ActorGraphInterpreter.scala:423) ~[akka-stream_2.11-2.4.12.jar:na]
background log: info: at akka.stream.impl.fusing.ActorGraphInterpreter.akka$stream$impl$fusing$ActorGraphInterpreter$$processEvent(ActorGraphInterpreter.scala:603) ~[akka-stream_2.11-2.4.12.jar:na]
background log: info: at akka.stream.impl.fusing.ActorGraphInterpreter$$anonfun$receive$1.applyOrElse(ActorGraphInterpreter.scala:618) ~[akka-stream_2.11-2.4.12.jar:na]
background log: info: at akka.actor.Actor$class.aroundReceive(Actor.scala:484) ~[akka-actor_2.11-2.4.12.jar:na]
background log: info: at akka.stream.impl.fusing.ActorGraphInterpreter.aroundReceive(ActorGraphInterpreter.scala:529) ~[akka-stream_2.11-2.4.12.jar:na]
background log: info: at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526) [akka-actor_2.11-2.4.12.jar:na]