# Logstash 5.6.2 Crashing

**URL:** https://discuss.elastic.co/t/logstash-5-6-2-crashing/110549
**Category:** Logstash
**Created:** [December 6, 2017, 5:32pm UTC](https://discuss.elastic.co/t/logstash-5-6-2-crashing/110549 "2017-12-06T17:32:31Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![shashwat](https://avatars.discourse-cdn.com/v4/letter/s/bbe5ce/32.png) [@shashwat](https://discuss.elastic.co/u/shashwat)
#### Post date: [December 6, 2017, 5:32pm UTC](https://discuss.elastic.co/t/logstash-5-6-2-crashing/110549/1 "2017-12-06T17:32:31Z")

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Hi,

I am running Logstash 5.6.2 on Linux environment. It runs for some time, sometimes for 2-3 days but then it suddenly stops. Following are the logs:

] An unexpected error occurred! {:error=\>#\<NoMethodError: undefined method `map_cleanup' for nil:NilClass>, :backtrace=>["/var/opt/elk/elk-configuration/logstash/logstash_distribution/logstash_instance_2/logstash-5.6.2/vendor/bundle/jruby/1.9/gems/logstash-codec-multiline-3.0.7/lib/logstash/codecs/identity_map_codec.rb:55:in`start'"

Please help.

Thanks,

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### Author: ![Andrew\_Cholakian1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/andrew_cholakian1/32/3612_2.png) [@Andrew\_Cholakian1](https://discuss.elastic.co/u/Andrew_Cholakian1)
#### Post date: [December 6, 2017, 5:43pm UTC](https://discuss.elastic.co/t/logstash-5-6-2-crashing/110549/2 "2017-12-06T17:43:40Z")

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This looks like a bug, can you make sure to post an issue to [https://github.com/elastic/logstash/issues](https://github.com/elastic/logstash/issues) ?

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<div class="post-metadata">

### Author: ![shashwat](https://avatars.discourse-cdn.com/v4/letter/s/bbe5ce/32.png) [@shashwat](https://discuss.elastic.co/u/shashwat)
#### Post date: [December 6, 2017, 5:48pm UTC](https://discuss.elastic.co/t/logstash-5-6-2-crashing/110549/3 "2017-12-06T17:48:06Z")

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sure

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 3, 2018, 5:48pm UTC](https://discuss.elastic.co/t/logstash-5-6-2-crashing/110549/4 "2018-01-03T17:48:17Z")

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