# Stack Monitoring Error

**URL:** <https://discuss.elastic.co/t/stack-monitoring-error/282267>\
**Category:** Kibana\
**Tags:** elastic-stack-monitoring\
**Created:** [August 23, 2021, 5:38pm UTC](https://discuss.elastic.co/t/stack-monitoring-error/282267 "2021-08-23T17:38:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![bigbobolue](https://avatars.discourse-cdn.com/v4/letter/b/d6d6ee/32.png) [@bigbobolue](https://discuss.elastic.co/u/bigbobolue)\
**Post date:** [August 23, 2021, 5:38pm UTC](https://discuss.elastic.co/t/stack-monitoring-error/282267/1 "2021-08-23T17:38:10Z")

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[illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max] (and) [illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max] (and) [illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max] (and) [illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max] (and) [illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max] (and) [illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max] (and) [illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max] (and) [illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max] (and) [illegal\_argument\_exception] Field [timestamp] of type [keyword] is not supported for aggregation [max]: Check the Elasticsearch Monitoring cluster network connection or the load level of the nodes.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [August 23, 2021, 10:17pm UTC](https://discuss.elastic.co/t/stack-monitoring-error/282267/2 "2021-08-23T22:17:44Z")

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Can you provide a bit more context on this. Simply copying the error text into a topic isn't super helpful.

What version of Elasticsearch and Kibana are you using?  
Where do you see this?  
Can you provide a screenshot?

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**Author:** ![bigbobolue](https://avatars.discourse-cdn.com/v4/letter/b/d6d6ee/32.png) [@bigbobolue](https://discuss.elastic.co/u/bigbobolue)\
**Post date:** [August 24, 2021, 12:33pm UTC](https://discuss.elastic.co/t/stack-monitoring-error/282267/3 "2021-08-24T12:33:25Z")

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Kibana and Elasticsearch 7.13.2. On the Stack Monitoring page.

 ![Capture5](https://us1.discourse-cdn.com/elastic/original/3X/b/2/b2791d74396c9e6180b702eaa93605de28360cbb.png)

I have made no recent changes to my system or configuration. And although I have gone digging through the logs on both Kibana and Elasticsearch, I have not seen any other errors.

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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:** [September 21, 2021, 12:34pm UTC](https://discuss.elastic.co/t/stack-monitoring-error/282267/4 "2021-09-21T12:34:21Z")

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