Why logstash shut down when I use output to log.txt?

I have a log index "log_index_0701" and there is about 9000000 logs in this index.

I want to output this index log as a txt file but logstash always shut down when I output.

Here is my config

      hosts => ["localhost:9200"]
      index => "log_index_0701"

     codec => line {format => "custom format : %{message}"}

And this is shut down message

 /usr/share/logstash/bin/logstash -f etc/logstash/conf.d/es_file.conf

[INFO ] 2021-07-05 19:33:59.593 [Api Webserver] agent - Successfully started Logstash API endpoint {:port=>9601}
[INFO ] 2021-07-05 19:33:59.916 [[main]>worker0] file - Opening file {:path=>"/etc/logstash/0701.txt"}
[INFO ] 2021-07-05 19:49:12.387 [[main]-pipeline-manager] javapipeline - Pipeline terminated {"pipeline.id"=>"main"}
[INFO ] 2021-07-05 19:49:12.561 [LogStash::Runner] runner - Logstash shut down.

How can I solve this problem?
Thank you

You need to supply a query to elasticsearch in your input otherwise it will just run:

'{ "sort": [ "_doc" ] }'

Logstash shuts down because you do not have a set schedule and as far as it is concerned it is done doing what it needs to do.

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