# Logstash crashing:NoMethodError: undefined method \`map\_cleanup' for nil:NilClass
**URL:** https://discuss.elastic.co/t/logstash-crashing-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass/46630
**Category:** Logstash
**Created:** [April 7, 2016, 6:12am UTC](https://discuss.elastic.co/t/logstash-crashing-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass/46630 "2016-04-07T06:12:36Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@baneshbanna](https://discuss.elastic.co/u/baneshbanna)
#### Post date: [April 7, 2016, 6:12am UTC](https://discuss.elastic.co/t/logstash-crashing-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass/46630/1 "2016-04-07T06:12:36Z")
Logstash crashed with the below exception.
No information available about this exception.
Thanks in advance.
NoMethodError: undefined method `map\_cleanup' for nil:NilClass
start at /apps/logstash-2.2.2/vendor/bundle/jruby/1.9/gems/logstash-codec-multiline-2.0.9/lib/logstash/codecs/identity\_map\_codec.rb:55
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### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [April 24, 2016, 7:43pm UTC](https://discuss.elastic.co/t/logstash-crashing-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass/46630/2 "2016-04-24T19:43:13Z")
A GitHub issue has been filed for this:
>
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 5:00am UTC](https://discuss.elastic.co/t/logstash-crashing-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass/46630/3 "2017-07-06T05:00:55Z")