Get error when removing blueprint (that is being used in an automation)

Title says it all :innocent:

I just removed some blueprints i thought i was not using anymore.
When i checked at my automation everything looked fine. After a couple hours i noticed that some automations have not started. i checked those automations and because i deleted the underlaying blueprint the automation was empty.

@prekz. I agree!
A cross reference function to locate entities in the config.