# Kbn webpack compile error and optimization failure

**URL:** <https://discuss.elastic.co/t/kbn-webpack-compile-error-and-optimization-failure/303226>\
**Category:** Kibana\
**Created:** [April 26, 2022, 7:49am UTC](https://discuss.elastic.co/t/kbn-webpack-compile-error-and-optimization-failure/303226 "2022-04-26T07:49:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![HarryX](https://avatars.discourse-cdn.com/v4/letter/h/3e96dc/32.png) [@HarryX](https://discuss.elastic.co/u/HarryX)\
**Post date:** [April 26, 2022, 7:49am UTC](https://discuss.elastic.co/t/kbn-webpack-compile-error-and-optimization-failure/303226/1 "2022-04-26T07:49:27Z")

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I'm on kibana 7.14.2 with wazuh plugin, I got these 2 errors when I started the server. I'm new to this platform please help me with these problems, thank you!!!

Here is the log.

np bld log [15:25:12.105] [info][@kbn/optimizer] initialized, 112 bundles cached  
np bld log [15:25:12.108] [warning][@kbn/optimizer] only building [v8dark,v8light] themes, customize with the KBN\_OPTIMIZER\_THEMES environment variable  
np bld log [15:25:18.630] [info][@kbn/optimizer] starting worker [1 bundle]  
watching for changes (39510 files)  
np bld log [15:25:20.440] [warning][@kbn/optimizer] worker stderr Browserslist: caniuse-lite is outdated. Please run:  
np bld log [15:25:20.441] [warning][@kbn/optimizer] worker stderr npx browserslist@latest --update-db  
np bld log [15:25:20.441] [warning][@kbn/optimizer] worker stderr  
np bld log [15:25:20.441] [warning][@kbn/optimizer] worker stderr Why you should do it regularly:  
np bld log [15:25:20.441] [warning][@kbn/optimizer] worker stderr [GitHub - browserslist/browserslist: 🦔 Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-preset-env](https://github.com/browserslist/browserslist#browsers-data-updating)  
np bld log [15:25:20.657] [error][@kbn/optimizer] webpack compile errors  
│ np bld log [15:25:20.657] [error][@kbn/optimizer] [wazuh] build  
│ np bld log [15:25:20.657] [error][@kbn/optimizer] Optimizations failure

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 24, 2022, 7:50am UTC](https://discuss.elastic.co/t/kbn-webpack-compile-error-and-optimization-failure/303226/2 "2022-05-24T07:50:15Z")

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