Filebeat sending two logs in nginx module

[boris_asapov]

hi all,
i've configured nginx module in filebeat , send access log to ELK stack ( logstash )
and its working fine but somehow filebeat sending two logs to logstash instead of one
my logstash index is :
index => "%{[beat][hostname]}-%{[fileset][name]}-%{+YYYY.MM.dd}"

and this is how im getting in elasticsearch in Index Management :

where does the second index comes from ??
" filebeat-6.8.17-2021.07.29"

thanks in advanced

[boris_asapov]

never mind , i found the problem. logstash had two conf files ( one with conf.old extension )