# Errors with journald plugin

**URL:** <https://discuss.elastic.co/t/errors-with-journald-plugin/151286>\
**Category:** Logstash\
**Created:** [October 5, 2018, 10:35pm UTC](https://discuss.elastic.co/t/errors-with-journald-plugin/151286 "2018-10-05T22:35:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![opoplawski](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/opoplawski/32/40442_2.png) [@opoplawski](https://discuss.elastic.co/u/opoplawski)\
**Post date:** [October 5, 2018, 10:35pm UTC](https://discuss.elastic.co/t/errors-with-journald-plugin/151286/1 "2018-10-05T22:35:25Z")

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Trying to use the journald plugin with logstash/elastic 6.4.2 and I'm getting:  
[2018-10-05T14:14:17,662][WARN][logstash.outputs.elasticsearch] Could not index event to Elasticsearch. {:status=\>400, :action=\>["index", {:\_id=\>nil, :\_index=\>"journald-%{[@metadata][version]}-2018.10.03", :\_type=\>"doc", :\_routing=\>nil}, #LogStash::Event:0x9433215], :response=\>{"index"=\>{"\_index"=\>"journald-%{[@metadata][version]}-2018.10.03", "\_type"=\>"doc", "\_id"=\>"sotLRmYBZ4A3W5U1sF6g", "status"=\>400, "error"=\>{"type"=\>"mapper\_parsing\_exception", "reason"=\>"Field [\_uid] is a metadata field and cannot be added inside a document. Use the index API request parameters."}}}}

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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:** [November 2, 2018, 10:35pm UTC](https://discuss.elastic.co/t/errors-with-journald-plugin/151286/2 "2018-11-02T22:35:26Z")

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