I just installed and run Logstash 7.2.1, it displayed this error log.
[2019-08-16T11:03:02,006][INFO ][logstash.setting.writabledirectory] Creating directory {:setting=>"path.queue", :path=>"D:/logstash-7.2.1/logstash-7.2.1/data/queue"}
[2019-08-16T11:03:02,071][INFO ][logstash.setting.writabledirectory] Creating directory {:setting=>"path.dead_letter_queue", :path=>"D:/logstash-7.2.1/logstash-7.2.1/data/dead_letter_queue"}
[2019-08-16T11:03:02,376][ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit