Some Blueprints can't be opened

Development Programming & Scripting Blueprint
1

Hello UE Community :slight_smile:

I am new to Unreal Engine and I hope that I am in the right thread of this forum.
As shown in the screenshot, I have some issues opening some of the blueprints.
In this example I created a project using the advanced vehicle starter project and tried to look at the wheels blueprints. They don’t load anything and just stay like this. How can I fix this issue?
Btw not all blueprints got that problem.

Thanks in advance!