🇺🇸United States @zrpnr

This error occurred for me when adding the `layout_builder_restrictions` module and setting default custom layouts defined in my theme.
Exporting config creates the following lines in the relevant `entity_view_display` files such as such as `core.entity_view_display.node.article.default.yml`

Under:
```yaml
third_party_settings:
layout_builder:
```
In `sections`

For example:

```yaml
lb_plus:
uuid:
```

and
```yaml
lb_plus:
default_section:
layout_plugin:
label:
```

Adding definitions for this in `lb_plus.schema.yml` seems to solve the errors, tested both locally and on our CI with the patch from the MR above.

Credit to @gabesullice for figuring out the syntax for the missing schema.

zrpnr → made their first commit to this issue’s fork.

Added an MR to cast the values on submit.

zrpnr → created an issue.

zrpnr → made their first commit to this issue’s fork.

Patch applies, upgrade_status didn't find any D10 issues with this module. With the patch applied module installs normally, no errors.