# Kibana 5.4.3 error

**URL:** https://discuss.elastic.co/t/kibana-5-4-3-error/91823
**Category:** Kibana
**Created:** [July 5, 2017, 1:37am UTC](https://discuss.elastic.co/t/kibana-5-4-3-error/91823 "2017-07-05T01:37:30Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![sonnguyenit](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@sonnguyenit](https://discuss.elastic.co/u/sonnguyenit)
#### Post date: [July 5, 2017, 1:37am UTC](https://discuss.elastic.co/t/kibana-5-4-3-error/91823/1 "2017-07-05T01:37:30Z")

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I use Kibaba 5.4.3.  
Yesterday it still worked find, but to day, i open it and get this error.  
I try to clear session and refresh it but sill get this error.

 ![](https://us1.discourse-cdn.com/elastic/original/3X/c/9/c97ad41755f721014147110d3a1e56511631d3e7.png)

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### Author: ![weltenwort](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/weltenwort/32/53885_2.png) [@weltenwort](https://discuss.elastic.co/u/weltenwort)
#### Post date: [July 5, 2017, 7:50am UTC](https://discuss.elastic.co/t/kibana-5-4-3-error/91823/2 "2017-07-05T07:50:04Z")

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Hi @sonnguyenit,

this seems to be an issue that occasionally comes up when the x-pack installtion goes wrong. Usually deleting the `optimize/bundles` directory and restarting the Kibana server solves this. The [Kibana Issue #9369](https://github.com/elastic/kibana/issues/9369) tracks the progress on solving this permanently.

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<div class="post-metadata">

### Author: ![sonnguyenit](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@sonnguyenit](https://discuss.elastic.co/u/sonnguyenit)
#### Post date: [July 5, 2017, 8:19am UTC](https://discuss.elastic.co/t/kibana-5-4-3-error/91823/3 "2017-07-05T08:19:18Z")

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thanks @weltenwort, it solved.

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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: [August 2, 2017, 8:19am UTC](https://discuss.elastic.co/t/kibana-5-4-3-error/91823/4 "2017-08-02T08:19:34Z")

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