- 🇪🇸Spain aleix
Just note that it also happens to me when using config_inspector → module and going to /admin/reports/config-inspector:
The configuration property conditions.current_theme.theme.claro doesn't exist.
Upgrading as pookmish says and resaving all assets (2 in my case) fixes this. A database upgrade hook would've been ideal here to normalize the asset injector configs which have just a single theme as well as warn users about asset injector entries with multiple themes which needed addressing, removing any manual legwork.