Error "Unable to find homeassistant/confirmable_notification.yaml "

I’ve ran into an issue where all automations were showing grey / disabled.
Log shows a warning:

Invalid config for [script]: Failed to load blueprint: Unable to find homeassistant/confirmable_notification.yaml (See /config/configuration.yaml, line 10).
4:28:51 PM – (ERROR) components/blueprint/models.py - message first occurred at 4:26:35 PM and shows up 3 times

Line 10 used to have “automation: !include automations.yaml” but I’ve commented it out.
image

I’ve since deleted everything from automations.yaml and deleted all blueprints.

Last major change to the system was getting Sengled Light Switch working by:

Stating the obvious, but look for “confirmable_notification.yaml” in your various YAML files.

Did you find the solution?
I have the same issue since several weeks.
Thanks