'First Person Character' inheritance problem

Hello!
I tried to create a key and door system and have been following this tutorial:

I get this message, although, as far as I can tell I have done everything like in the video:
Warning ‘First Person Character’ does not inherit from ‘Primitive Component’

I have no clue what’s wrong. Could someone please help me out?

Sorry if this is a silly question, I am new to the blueprint stuff.

Hello

You need to plug the Other Actor from the overlap event into Object on the Cast node.

Oh, silly me, I mixed it up…

Thank you very much!!

You’re welcome!