# Logstash Error while running in docker

**URL:** <https://discuss.elastic.co/t/logstash-error-while-running-in-docker/171759>\
**Category:** Logstash\
**Tags:** docker\
**Created:** [March 11, 2019, 12:30pm UTC](https://discuss.elastic.co/t/logstash-error-while-running-in-docker/171759 "2019-03-11T12:30:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Vignesh\_Kumar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vignesh_kumar/32/41866_2.png) [@Vignesh\_Kumar](https://discuss.elastic.co/u/Vignesh_Kumar)\
**Post date:** [March 11, 2019, 12:30pm UTC](https://discuss.elastic.co/t/logstash-error-while-running-in-docker/171759/1 "2019-03-11T12:30:26Z")

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Have the below error please help to solve it.

[2019-03-11T12:15:39,040][FATAL][logstash.runner] An unexpected error occurred! {:error=\>#\<NoMethodError: undefined method `<' for nil:NilClass>, :backtrace=>["/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.1.1-java/lib/logstash/outputs/elasticsearch/common.rb:222:in`get\_event\_type'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.1.1-java/lib/logstash/outputs/elasticsearch/common.rb:47:in `event_action_tuple'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.1.1-java/lib/logstash/outputs/elasticsearch/common.rb:36:in`block in multi\_receive'", "org/jruby/RubyArray.java:2486:in `map'", "/usr/share/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-output-elasticsearch-9.1.1-java/lib/logstash/outputs/elasticsearch/common.rb:36:in`multi\_receive'", "/usr/share/logstash/logstash-core/lib/logstash/output\_delegator\_strategies/shared.rb:13:in `multi_receive'", "/usr/share/logstash/logstash-core/lib/logstash/output_delegator.rb:49:in`multi\_receive'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:477:in `block in output_batch'", "org/jruby/RubyHash.java:1343:in`each'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:476:in `output_batch'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:428:in`worker\_loop'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:386:in `block in start\_workers'"]}

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<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [March 11, 2019, 2:01pm UTC](https://discuss.elastic.co/t/logstash-error-while-running-in-docker/171759/2 "2019-03-11T14:01:58Z")

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What does your configuration look like?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 8, 2019, 2:02pm UTC](https://discuss.elastic.co/t/logstash-error-while-running-in-docker/171759/3 "2019-04-08T14:02:07Z")

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