6.8.4 There are some warning

[zhuermu]

{"log":"[2019-12-18T13:54:15,863][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [DZmcOqV] uncaught exception in thread [main]\n","stream":"stdout","time":"2019-12-18T13:54:15.872336111Z"} {"log":"org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: failed to load plugin ingest-csv due to jar hell\n","stream":"stdout","time":"2019-12-18T13:54:15.872358713Z"} {"log":"\u0009at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-6.8.4.jar:6.8.4]\n","stream":"stdout","time":"2019-12-18T13:54:15.872362256Z"} {"log":"\u0009at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-6.8.4.jar:6.8.4]\n","stream":"stdout","time":"2019-12-18T13:54:15.872365676Z"} {"log":"\u0009at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.8.4.jar:6.8.4]\n","stream":"stdout","time":"2019-12-18T13:54:15.872368951Z"} {"log":"\u0009at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.8.4.jar:6.8.4]\n","stream":"stdout","time":"2019-12-18T13:54:15.872379071Z"} {"log":"\u0009at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.8.4.jar:6.8.4]\n","stream":"stdout","time":"2019-12-18T13:54:15.872383079Z"} {"log":"\u0009at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:116) ~[elasticsearch-6.8.4.jar:6.8.4]\n","stream":"stdout","time":"2019-12-18T13:54:15.872386968Z"} {"log":"\u0009at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) ~[elasticsearch-6.8.4.jar:6.8.4]\n","stream":"stdout","time":"2019-12-18T13:54:15.87239063Z"} {"log":"Caused by: java.lang.IllegalStateException: failed to load plugin ingest-csv due to jar hell\n","stream":"stdout","time":"2019-12-18T13:54:15.872394254Z"}