# Updating Trellis: SSL Error for 'site_uses_letsencrypt'

**URL:** https://discourse.roots.io/t/updating-trellis-ssl-error-for-site-uses-letsencrypt/8663
**Category:** trellis
**Created:** 2017-01-26T14:52:38Z
**Posts:** 5
**Showing post:** 2 of 5

## Post 2 by @cfx — 2017-01-26T15:16:34Z

I use Chris’s subtree techniques he posted a while back.

> [@Best practices to update Trellis](https://discourse.roots.io/t/best-practices-to-update-trellis/5386/6):
>
> I’ve posted a blog post about using subtrees with trellis/ bedrock/ sage: [using git subtrees](http://chrisknightindustries.com/2015/24/11/git-subtrees-for-trellis-workflow.html) Please take a look and if anyone spots any improvements/ gotchas to this flow please let me know!

The error you’re posting looks like it could be a YAML syntax issue (likely some bad spacing made its way into the playbook).

Try running the `server.yml` with the `-vvvv` flags to get more verbose output from your provision and check any playbooks on your end against the repo to make sure the spacing matches up.

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_[View the full topic](https://discourse.roots.io/t/updating-trellis-ssl-error-for-site-uses-letsencrypt/8663)._