# Not able to add plugin through app.yml

**URL:** <https://meta.discourse.org/t/not-able-to-add-plugin-through-app-yml/122407>\
**Category:** Self-hosting\
**Created:** [July 9, 2019, 5:48am UTC](https://meta.discourse.org/t/not-able-to-add-plugin-through-app-yml/122407 "2019-07-09T05:48:24Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![Steven](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/steven/32/187890_2.png) [@Steven](https://meta.discourse.org/u/Steven)\
**Post date:** [July 9, 2019, 6:11am UTC](https://meta.discourse.org/t/not-able-to-add-plugin-through-app-yml/122407/2 "2019-07-09T06:11:25Z")

</div>

You can use a yaml validator to check syntax issue : [http://www.yamllint.com/](http://www.yamllint.com/)

Or share parts of your app file here so we can guide you

Don’t forget, you can’t use tab in a yml file, always use space.

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_[View the full topic](https://meta.discourse.org/t/not-able-to-add-plugin-through-app-yml/122407)._