Failed to load class when starting ES-5.6.3 + ROR

I’m running ES-5.6.3 (single node cluster) and on RHEL.
When I start es with the command “./bin/elasticsearch -d -p pid” then I’m losing control on command shell and seeing the message:
SLF4J: Failed to load class "org.slf4g.impl.StaticLoger.Binder"
SLF4J: Defaulting to no-operation (NOP) logger implementation.

Clicking on “Enter” returns me control on command shell and es+ror works ok, as normar.

Any advise how this issue/message might be fixed ?

Well I think it’s not much about “losing control”, rather it’s just two messages in the standard error. Yeah it’s a glitch, but not real side effects.

Oh, good to know about it. Thanks for the response Simone.

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Where can I get the ROR version for ES-5.6.3 with this glitch fixed already ?
ES with this ROR version with glitch works fine for manual deployment and starting the multi node cluster.
I’d like to automate deployment and start for ES and ROR on multi node cluster with the scripts I’m working on.
Appreciate your help.