PIE: Error: Blueprint Runtime Error: "Accessed None trying to read property CallFunc_GetComponentByClass_ReturnValue".

[AbdElhalimWahid]

I get this error after I close the game whenever I try to use selection box (marquee) on friendly actors and hostile characters.
I’ve defined the hostile and friendly.

[ClockworkOcean]

The code might execute the ‘get component by class’ even when the interface is not implemented.

Also, this

will return null when the actor has none of these components.