# Logstash conf reload error

**URL:** <https://discuss.elastic.co/t/logstash-conf-reload-error/98085>\
**Category:** Logstash\
**Created:** [August 23, 2017, 1:47pm UTC](https://discuss.elastic.co/t/logstash-conf-reload-error/98085 "2017-08-23T13:47:17Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![user1](https://avatars.discourse-cdn.com/v4/letter/u/5daacb/32.png) [@user1](https://discuss.elastic.co/u/user1)\
**Post date:** [August 23, 2017, 1:47pm UTC](https://discuss.elastic.co/t/logstash-conf-reload-error/98085/1 "2017-08-23T13:47:17Z")

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Hi ,

PLZ help me...

logstash not able to listen filebeat output

[2017-08-23T19:06:43,864][ERROR][logstash.agent] Pipeline aborted due to error {:exception=\>#\<RegexpError: target of repeat operator is not specified: /+/\>, :backtrace=\>["org/jruby/RubyRegexp.java:1424:in `initialize'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-filter-mutate-3.1.5/lib/logstash/filters/mutate.rb:207:in`register'", "org/jruby/RubyArray.java:1653:in `each_slice'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/logstash-filter-mutate-3.1.5/lib/logstash/filters/mutate.rb:195:in`register'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:281:in `register_plugin'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:292:in`register\_plugins'", "org/jruby/RubyArray.java:1613:in `each'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:292:in`register\_plugins'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:302:in `start_workers'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:226:in`run'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:398:in `start\_pipeline'"]}

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<div class="post-metadata">

**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:** [August 23, 2017, 9:05pm UTC](https://discuss.elastic.co/t/logstash-conf-reload-error/98085/2 "2017-08-23T21:05:59Z")

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You have a bad regexp in one of your mutate filters.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 20, 2017, 9:06pm UTC](https://discuss.elastic.co/t/logstash-conf-reload-error/98085/3 "2017-09-20T21:06:01Z")

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Closed on September 20, 2017, 9:06pm UTC

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