Initializing/casting weapon error..? (please help i really want to carry on...)

Hey Guys,
lately I have been trying to clean up my blueprints a bit and, well I tried to make an extra class for my weapon, because before that my hero was in charge of shooting etc the weapon and I wanted to seperate that.

But for some reason it just doesn’t do anything anymore and I can’t even start the debugger for the weapon, which would mean that it isn’t actually in the game or referenced by it, although the weapon itself is actually in there, as you can see on the right hand site of my picture…

Maybe I need to reference it somewhere or start the blueprint in some way…?

Thank you in advance,