Elasticsearch can't index

[dadoonet (David Pilato)]

It's a duplicate of this question you already opened.

Une connexion existante a dû être fermée par l’hôte distant

I always receive this problem and I can't find a solution for this : [2018-04-09T11:31:33,435][WARN ][o.e.h.n.Netty4HttpServerTransport] [SST-P1307000FW] caught exception while handling client http traffic, closing connection [id: 0xf3359329, L:/127.0.0.1:9200 - R:/127.0.0.1:59532] java.io.IOException: Une connexion existante a dû être fermée par l’hôte distant at sun.nio.ch.SocketDispatcher.read0(Native Method) ~[?:?] at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43) ~[?:?] at …