Cannot have more than one plugin implementing a REST wrapper

• 安装readonlyrest启动es时报错

at org.elasticsearch.cli.Command.main(Command. ~[elasticsearch-cli-6.4.1.jar:6.4.1]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch. ~[elasticsearch-6.4.1.jar:6.4.1]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch. ~[elasticsearch-6.4.1.jar:6.4.1]
Caused by: java.lang.IllegalArgumentException: Cannot have more than one plugin implementing a REST wrapper

• 解决
  x-pack-security插件和自定义开发插件冲突，删除x-pack-security或在elasticsearch.yml中将xpack security禁用。xpack.security.enabled = false