Cant start logstash

[ERROR][logstash.agent ] Cannot create pipeline {:reason=>"Cannot evaluate${DATA}. Environment variableDATAis not set and there is no default value given."}
I dont understand this error and I dont know what is it ${DATA}
Please help me

How are you starting Logstash?

initctl start logstash
P.S. My OS is CentOS 6

What files do you have in /etc/logstash/conf.d and what's the contents of them?

I have the next config

Hmm, weird. I don't know what's up.

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