# Error while querying elasticsearch

**URL:** <https://discuss.elastic.co/t/error-while-querying-elasticsearch/100634>\
**Category:** Elasticsearch\
**Created:** [September 15, 2017, 5:20am UTC](https://discuss.elastic.co/t/error-while-querying-elasticsearch/100634 "2017-09-15T05:20:06Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![mruthyu](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@mruthyu](https://discuss.elastic.co/u/mruthyu)\
**Post date:** [October 17, 2017, 1:44pm UTC](https://discuss.elastic.co/t/error-while-querying-elasticsearch/100634/11 "2017-10-17T13:44:05Z")

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I have seen the following links and wanted to check if this issue is also related to the index templates/mappings.

> [@Courier fetch: N of N shards failed](https://discuss.elastic.co/t/courier-fetch-n-of-n-shards-failed/27814/7):
>
> Does ismb.miki.vm.vcpu.usage exist in the logstash-2015.07.21 index?

> <https://github.com/elastic/kibana/issues/3221>
>
> recently I got the warning:
> Courier Fetch: 17 of 100 shards failed.
> 
> what cause …it and what can I do to fix it? 
> 
> thanks Akiva

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