# Elasticsearch 5.6.0 : using kstem in custom analyzer throws error

**URL:** <https://discuss.elastic.co/t/elasticsearch-5-6-0-using-kstem-in-custom-analyzer-throws-error/204459>\
**Category:** Elasticsearch\
**Created:** [October 21, 2019, 12:07pm UTC](https://discuss.elastic.co/t/elasticsearch-5-6-0-using-kstem-in-custom-analyzer-throws-error/204459 "2019-10-21T12:07:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Renuka](https://avatars.discourse-cdn.com/v4/letter/r/bc8723/32.png) [@Renuka](https://discuss.elastic.co/u/Renuka)\
**Post date:** [October 21, 2019, 12:07pm UTC](https://discuss.elastic.co/t/elasticsearch-5-6-0-using-kstem-in-custom-analyzer-throws-error/204459/1 "2019-10-21T12:07:17Z")

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Been using elasticsearch 5.6.0 in prod environment. now we are replicating prod setup. during which when creating the same index with same settings, it throws illegal argument exception.

{"error":{"root\_cause":[{"type":"illegal\_argument\_exception","reason":"unknown setting [index.name.settings.index.analysis.analyzer.custom\_kstem.filter.0] please  
check that any required plugins are installed, or check the breaking changes documentation for removed settings"}],"type":"illegal\_argument\_exception","reason":"unknown setting [index.name.settings.index.analysis.analyzer.custom\_kstem.filter.0] please check that any required plugins are installed, or check the breaking changes documentation for removed settings"},"status":400}

setting :  
"custom\_kstem" : { "filter" : ["standard","lowercase", "stop", "kstem"], "type" : "custom", "tokenizer" : "standard" }

now, the same setting throws error even if I remove standard filter from above setting. just tried removing standard as standard is no more supported from 7.0. but I'm facing these issues in 5.6.0. Pls help to solve this. thanks.

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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:** [November 18, 2019, 12:07pm UTC](https://discuss.elastic.co/t/elasticsearch-5-6-0-using-kstem-in-custom-analyzer-throws-error/204459/2 "2019-11-18T12:07:27Z")

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