# Logstash Crashed:NoMethodError: undefined method \`map\_cleanup' for nil:NilClass start at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-codec-multiline-2.0.11/lib/logstash/codecs/identity\_map\_codec.rb:55

**URL:** https://discuss.elastic.co/t/logstash-crashed-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass-start-at-opt-logstash-vendor-bundle-jruby-1-9-gems-logstash-codec-multiline-2-0-11-lib-logstash-codecs-identity-map-codec-rb-55/49693
**Category:** Logstash
**Created:** [May 10, 2016, 5:35pm UTC](https://discuss.elastic.co/t/logstash-crashed-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass-start-at-opt-logstash-vendor-bundle-jruby-1-9-gems-logstash-codec-multiline-2-0-11-lib-logstash-codecs-identity-map-codec-rb-55/49693 "2016-05-10T17:35:54Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [May 15, 2016, 11:30am UTC](https://discuss.elastic.co/t/logstash-crashed-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass-start-at-opt-logstash-vendor-bundle-jruby-1-9-gems-logstash-codec-multiline-2-0-11-lib-logstash-codecs-identity-map-codec-rb-55/49693/2 "2016-05-15T11:30:57Z")

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You asked the exact same question five weeks ago and I responded with a reference to a GitHub issue: [Logstash crashing:NoMethodError: undefined method `map\_cleanup' for nil:NilClass](https://discuss.elastic.co/t/logstash-crashing-nomethoderror-undefined-method-map-cleanup-for-nil-nilclass/46630)

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