Logstash is not generating log file

@Badger
These are the logs that i'm getting while starting the service.

sudo /usr/share/logstash/bin/logstash -f /etc/logstash/conf.d/logstash-filter.conf --path.data=/var/lib/logstash &
[1] 2844
[ec2-user@PROD-LOGSTASH ~]$ 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
[WARN ] 2019-10-11 01:13:59.287 [LogStash::Runner] multilocal - Ignoring the 'pipelines.yml' file because modules or command line options are specified
[INFO ] 2019-10-11 01:13:59.302 [LogStash::Runner] runner - Starting Logstash {"logstash.version"=>"6.8.1"}
/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-output-amazon_es-6.4.2-java/lib/logstash/outputs/amazon_es/http_client/pool.rb:33: warning: already initialized constant ROOT_URI_PATH
/lib/bootstrap/environment.rb:6] agent - Pipelines running {:count=>1, :running_pipelines=>[:main], :non_running_pipelines=>}
[INFO ] 2019-10-11 01:14:10.154 [[main]<beats] Server - Starting server on port: 5044
[INFO ] 2019-10-11 01:14:10.446 [Api Webserver] agent - Successfully started Logstash API endpoint {:port=>9605}