# Site down, error rebuilding!c due to yml error

**URL:** <https://meta.discourse.org/t/site-down-error-rebuilding-c-due-to-yml-error/277975>\
**Category:** Self-hosting\
**Created:** [September 6, 2023, 7:18am UTC](https://meta.discourse.org/t/site-down-error-rebuilding-c-due-to-yml-error/277975 "2023-09-06T07:18:08Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![JammyDodger](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jammydodger/32/254611_2.png) [@JammyDodger](https://meta.discourse.org/u/JammyDodger)\
**Post date:** [September 6, 2023, 7:30am UTC](https://meta.discourse.org/t/site-down-error-rebuilding-c-due-to-yml-error/277975/2 "2023-09-06T07:30:17Z")

</div>

It looks like you have a syntax error in your `app.yml`. Did you make any changes that you can easily reverse/fix?

They’re very sensitive to typos, but you can also use a web-based yaml validator or linter to check it as well if there’s nothing immediately obvious.

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