Error: react-modal: No elements were found for selector #root.

I'm getting this error on Nextjs.

```
Unhandled Runtime Error
Error: react-modal: No elements were found for selector #root.
```

Steps to reproduce:

1. Simple boilerplate
2. Install latest `theme-ui`
3. Install @emotion/serialize and @emotion/sheet (might not be supporting latest theme-ui 🤷‍♂️ )
4. Install latest @indivorg/kit