# \[SOLVED\]\[LOGSTASH-FILTER-RUBY\] Import class 'date'

**URL:** <https://discuss.elastic.co/t/solved-logstash-filter-ruby-import-class-date/223078>\
**Category:** Logstash\
**Created:** [March 11, 2020, 9:10am UTC](https://discuss.elastic.co/t/solved-logstash-filter-ruby-import-class-date/223078 "2020-03-11T09:10:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Bruno1](https://avatars.discourse-cdn.com/v4/letter/b/b2d939/32.png) [@Bruno1](https://discuss.elastic.co/u/Bruno1)\
**Post date:** [March 11, 2020, 9:10am UTC](https://discuss.elastic.co/t/solved-logstash-filter-ruby-import-class-date/223078/1 "2020-03-11T09:10:55Z")

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Hello I have the following error when I try to import 'date' library on ruby logstash filter.

> [2020-03-11T09:09:01,916][ERROR][logstash.filters.ruby][main] Ruby exception occurred: cannot load Java class date

My code is :

> ruby {  
> code =\> '  
> import "date"  
> '  
> }

If someone have an idea ?

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<div class="post-metadata">

**Author:** ![Bruno1](https://avatars.discourse-cdn.com/v4/letter/b/b2d939/32.png) [@Bruno1](https://discuss.elastic.co/u/Bruno1)\
**Post date:** [March 11, 2020, 9:41am UTC](https://discuss.elastic.co/t/solved-logstash-filter-ruby-import-class-date/223078/2 "2020-03-11T09:41:08Z")

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Sorry I work on contener and I have forget to reinstall logstash-filter-ruby

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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:** [April 8, 2020, 9:41am UTC](https://discuss.elastic.co/t/solved-logstash-filter-ruby-import-class-date/223078/3 "2020-04-08T09:41:19Z")

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