Elastic to csv using logstash

I use the following conf file to import data from elasticsearch to csv using logstash...
input {
elasticsearch {
hosts => "localhost:9200"
index => "croma"
query => '
{"query":
{
"match_phrase" : {
"search_data.full_text_boosted": "laptop bag "
}
}
}'
}
}
output {
csv {
fields => ["full_text_boosted","scores"]
path => "/root/sam/csv-export.csv"
}
}

I also installed following logstash plugin...
logstash-input-elasticsearch
logstash-output-csv

But it giving the following error...
WARNING: Could not find logstash.yml which is typically located in $LS_HOME/config or /etc/logstash. You can specify the path using --path.settings. Continuing using the defaults
Could not find log4j2 configuration at path /usr/share/logstash/config/log4j2.properties. Using default config which logs errors to the console

Any body can tell me where I am wrong?
Thanks

Hi,
What does your directory structure look like? Where is logstash bin and config on your file system?

Thanks for replying...it's working with match but not working with match_phrase...any reason...

That's a warning, not an error, and you can safely ignore this.

Thanks warkolm for your kind suggestion.