# NoMethodError: undefined method \`\<’ for nil:NilClass\>

**URL:** <https://discuss.elastic.co/t/nomethoderror-undefined-method-for-nil-nilclass/183243>\
**Category:** Logstash\
**Created:** [May 29, 2019, 7:05am UTC](https://discuss.elastic.co/t/nomethoderror-undefined-method-for-nil-nilclass/183243 "2019-05-29T07:05:21Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![sadiesh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sadiesh/32/38868_2.png) [@sadiesh](https://discuss.elastic.co/u/sadiesh)\
**Post date:** [May 29, 2019, 7:05am UTC](https://discuss.elastic.co/t/nomethoderror-undefined-method-for-nil-nilclass/183243/1 "2019-05-29T07:05:21Z")

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date  
{  
match =\> ["event\_timestamp", "dd MMM yyyy HH:mm:ss,SSS"]  
target =\> "event\_timestamp"  
add\_field =\> {"[hour]" =\> "%{+HH}"}  
add\_field =\> {"[min]" =\> "%{+EEE}"}  
}  
mutate{  
convert =\>{ "hour" =\> "integer"}  
}  
Hi  
In logstash output for elasticsearch am using below code and getting

NoMethodError: undefined method `\<’ for nil:NilClass\>

if ([hour] \< 2 ){  
elasticsearch{  
host =\>[10.343.434.343:9200]  
index =\> index -1  
}}  
} else if ( 5 \> [hour] and [hour] \>=2 )  
{  
elasticsearch{  
host =\>[10.343.434.343:9200]  
index =\> index -2  
}  
}

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<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [May 29, 2019, 2:57pm UTC](https://discuss.elastic.co/t/nomethoderror-undefined-method-for-nil-nilclass/183243/2 "2019-05-29T14:57:07Z")

</div>

That configuration is not even close to being compilable. Please provide a configuration that actually demonstrates the issue.

That said, I would expect that error if you have pipeline.java\_execution false and the [hour] field does not exist. (With java\_execution true you get a much less informative NPE.)

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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:** [June 26, 2019, 2:57pm UTC](https://discuss.elastic.co/t/nomethoderror-undefined-method-for-nil-nilclass/183243/3 "2019-06-26T14:57:07Z")

</div>

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