# Logstash error with x-pack

**URL:** <https://discuss.elastic.co/t/logstash-error-with-x-pack/76379>\
**Category:** Logstash\
**Created:** [February 24, 2017, 9:58am UTC](https://discuss.elastic.co/t/logstash-error-with-x-pack/76379 "2017-02-24T09:58:15Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Suin\_You](https://avatars.discourse-cdn.com/v4/letter/s/71c47a/32.png) [@Suin\_You](https://discuss.elastic.co/u/Suin_You)\
**Post date:** [February 24, 2017, 9:58am UTC](https://discuss.elastic.co/t/logstash-error-with-x-pack/76379/1 "2017-02-24T09:58:15Z")

</div>

I install the x-pack and start logstash but got the error.

Error is

```
Sending Logstash's logs to /usr/local/logstash/logs which is now configured via log4j2.properties
[2017-02-24T18:54:14,460][ERROR][logstash.monitoringextension] uninitialized constant LogStash::Setting::ArrayCoercible
[2017-02-24T18:54:14,467][FATAL][logstash.runner] An unexpected error occurred! {:error=>#<NameError: no method 'error' for arguments (org.jruby.RubyArray,org.jruby.RubyHash) on Java::OrgApacheLoggingLog4jCore::Logger
  available overloads:
    (org.apache.logging.log4j.Marker,java.lang.String,java.lang.Object[])
    (org.apache.logging.log4j.Marker,java.lang.String,org.apache.logging.log4j.util.Supplier[])
    (java.lang.String,org.apache.logging.log4j.util.Supplier[])
    (java.lang.String,java.lang.Object[])>, :backtrace=>["/usr/local/logstash/logstash-core/lib/logstash/logging/logger.rb:56:in `error'", "/usr/local/logstash/vendor/bundle/jruby/1.9/gems/x-pack-5.2.1-java/lib/monitoring/monitoring.rb:148:in `additionals_settings'", "/usr/local/logstash/logstash-core/lib/logstash/plugins/registry.rb:90:in `register'", "/usr/local/logstash/logstash-core/lib/logstash/plugins/registry.rb:109:in `execute_universal_plugins'", "org/jruby/RubyArray.java:1613:in `each'", "/usr/local/logstash/logstash-core/lib/logstash/plugins/registry.rb:107:in `execute_universal_plugins'", "/usr/local/logstash/logstash-core/lib/logstash/plugins/registry.rb:103:in `setup!'", "/usr/local/logstash/logstash-core/lib/logstash/runner.rb:209:in `execute'", "/usr/local/logstash/vendor/bundle/jruby/1.9/gems/clamp-0.6.5/lib/clamp/command.rb:67:in `run'", "/usr/local/logstash/logstash-core/lib/logstash/runner.rb:183:in `run'", "/usr/local/logstash/vendor/bundle/jruby/1.9/gems/clamp-0.6.5/lib/clamp/command.rb:132:in `run'", "/usr/local/logstash/lib/bootstrap/environment.rb:71:in `(root)'"]}

```

Logstash version: 5.2.0  
x-pack : 5.2.0

---

<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [February 24, 2017, 10:03am UTC](https://discuss.elastic.co/t/logstash-error-with-x-pack/76379/2 "2017-02-24T10:03:53Z")

</div>

Can you try again with 5.2.1?

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<div class="post-metadata">

**Author:** ![Suin\_You](https://avatars.discourse-cdn.com/v4/letter/s/71c47a/32.png) [@Suin\_You](https://discuss.elastic.co/u/Suin_You)\
**Post date:** [February 27, 2017, 5:56am UTC](https://discuss.elastic.co/t/logstash-error-with-x-pack/76379/3 "2017-02-27T05:56:30Z")

</div>

Thank you for your many answers! You are so kind!

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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:** [March 27, 2017, 5:56am UTC](https://discuss.elastic.co/t/logstash-error-with-x-pack/76379/4 "2017-03-27T05:56:33Z")

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