Unreal Engine not running blueprint scripts

Hello. I am using Unreal Engine 4.27.1 and my engine was working properly, I was able to run blueprint scripts, but one day when starting a new project, I went to create a new blueprint script, (an actor blueprint specifically) and I encountered a problem of my engine refused to run any blueprints, even simple Event Beginplay → print script codes. I have reinstalled unreal, updated it, verified it, remade projects, and all manner of attempts, but to no avail. It is as though Unreal isn’t even recognizing there is a blueprint at all. Has anyone ever encountered this problem? Are there any solutions?

Thank you for your assistance.