Error occur after enable elasticsearch security feature

Hi all, I follow the this link
[https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch-logstash-and-kibana-elastic-stack-on-centos-7] to setup my elasticsearch in my RH linux server.

Everything is going fine without xpack.security.enabled: true in my elasticsearch.yml
But error occur when xpack.security.enabled: true is implemented in elasticsearch.yml