# \[Logstash\] - Exception in Pipelineworker

**URL:** <https://discuss.elastic.co/t/logstash-exception-in-pipelineworker/105191>\
**Category:** Logstash\
**Created:** [October 25, 2017, 8:05am UTC](https://discuss.elastic.co/t/logstash-exception-in-pipelineworker/105191 "2017-10-25T08:05:40Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**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:** [October 25, 2017, 8:46am UTC](https://discuss.elastic.co/t/logstash-exception-in-pipelineworker/105191/2 "2017-10-25T08:46:46Z")

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See this topic:

> [@NoMethodError: "undefined method 'to\_hash'" with CSV input in Logstash 5.6.2](https://discuss.elastic.co/t/nomethoderror-undefined-method-to-hash-with-csv-input-in-logstash-5-6-2/103545):
>
> I'm trying to send data from a .csv file containing JMeter results to an online Elasticsearch instance. My .conf file looks this way: input { file { path =\> ["\path\to\somefile.csv"] start\_position =\> "beginning" sincedb\_path =\> "NUL" ignore\_older =\> 0 } } output { elasticsearch { hosts =\> ["my.elasticsearch.instance"] index =\> "jmeter-%{+YYYY.MM.dd}" } stdout { codec =\> rubydebug } } When I run Logstash with the debug option, I get the following error and no da…

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