# error :\*"tsdb.HandleRequest() error invalid value type" in Grafana alert config

**URL:** <https://forums.percona.com/t/error-tsdb-handlerequest-error-invalid-value-type-in-grafana-alert-config/6075>\
**Category:** PMM 1.x\
**Created:** [December 12, 2017, 3:18am UTC](https://forums.percona.com/t/error-tsdb-handlerequest-error-invalid-value-type-in-grafana-alert-config/6075 "2017-12-12T03:18:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bckim](https://avatars.discourse-cdn.com/v4/letter/b/67e7ee/32.png) [@bckim](https://forums.percona.com/u/bckim)\
**Post date:** [December 12, 2017, 3:18am UTC](https://forums.percona.com/t/error-tsdb-handlerequest-error-invalid-value-type-in-grafana-alert-config/6075/1 "2017-12-12T03:18:14Z")

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hi, all

I have one question about grafana alert system.

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the graph is fine,

metric : node\_load1{instance=“big5db”}

but when I use “alert config” using this graph, there is some error.

error : “tsdb.HandleRequest() error invalid value type”

could I know why this error ouccured?

thanks.

 ![photoid=50331](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/9/985efdf63c7087e9217526911fe605b91f6078b8.jpeg)

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<div class="post-metadata">

**Author:** ![bckim](https://avatars.discourse-cdn.com/v4/letter/b/67e7ee/32.png) [@bckim](https://forums.percona.com/u/bckim)\
**Post date:** [December 14, 2017, 3:03am UTC](https://forums.percona.com/t/error-tsdb-handlerequest-error-invalid-value-type-in-grafana-alert-config/6075/2 "2017-12-14T03:03:40Z")

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this issue can be resolved in grafana 4.6.2 version.

so we need to upgrade grafana in pmm docker.