# An exception happened when converging configuration-logstash agent
**URL:** https://discuss.elastic.co/t/an-exception-happened-when-converging-configuration-logstash-agent/173515
**Category:** Logstash
**Created:** [March 22, 2019, 3:09pm UTC](https://discuss.elastic.co/t/an-exception-happened-when-converging-configuration-logstash-agent/173515 "2019-03-22T15:09:12Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@naveenrt23](https://discuss.elastic.co/u/naveenrt23)
#### Post date: [March 22, 2019, 3:09pm UTC](https://discuss.elastic.co/t/an-exception-happened-when-converging-configuration-logstash-agent/173515/1 "2019-03-22T15:09:12Z")
Hello,
I have just started using logstash and I am not really sure what the stack trace means. Can someone help me?
[2019-03-22T09:52:37,183][ERROR][logstash.agent] An exception happened when converging configuration {:exception=\>LogStash::Error, :message=\>"Don't know how to handle `Java::OrgLogstashConfigIr::InvalidIRException` for `LogStash::PipelineAction::Create/pipeline_id:main`", :backtrace=\>["/test/logstash/current/logstash-core/lib/logstash/converge\_result.rb:27:in `create'", "/test/logstash/current/logstash-core/lib/logstash/converge_result.rb:67:in`add'", "/test/logstash/current/logstash-core/lib/logstash/agent.rb:327:in `block in converge_state'", "/test/logstash/current/logstash-core/lib/logstash/agent.rb:141:in`with\_pipelines'", "/test/logstash/current/logstash-core/lib/logstash/agent.rb:312:in `block in converge_state'", "org/jruby/RubyArray.java:1734:in`each'", "/test/logstash/current/logstash-core/lib/logstash/agent.rb:299:in `converge_state'", "/test/logstash/current/logstash-core/lib/logstash/agent.rb:166:in`block in converge\_state\_and\_update'", "/test/logstash/current/logstash-core/lib/logstash/agent.rb:141:in `with_pipelines'", "/test/logstash/current/logstash-core/lib/logstash/agent.rb:164:in`converge\_state\_and\_update'", "/test/logstash/current/logstash-core/lib/logstash/agent.rb:90:in `execute'", "/test/logstash/current/logstash-core/lib/logstash/runner.rb:348:in`block in execute'", "/test/logstash/current/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/task.rb:24:in `block in initialize'"]}
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### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [March 22, 2019, 4:29pm UTC](https://discuss.elastic.co/t/an-exception-happened-when-converging-configuration-logstash-agent/173515/2 "2019-03-22T16:29:33Z")
What does your configuration look like?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 19, 2019, 4:29pm UTC](https://discuss.elastic.co/t/an-exception-happened-when-converging-configuration-logstash-agent/173515/3 "2019-04-19T16:29:35Z")
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