I need help please, Object Reference

I cant connect pins for a few things that their object refence comes from a different object reference, I’m still kinda fresh to things so I don’t know how to fix it. I fixed a few I believe by making a new Boolean that was like the asset one, but idk how to make the other ones, or if there is a easier way to fix all.
here’s a picture of the message i get, i get the same message for each pin that has an error.

file:///C:/Users/Owner/Pictures/Screenshots/Screenshot%20(5).png

There’s no picture.

Golden rule is, always make your new nodes by dragging a pin from the previous nodes.

As you’ve discovered, you can’t repurpose nodes you already have in the graph, so you can just remove a remake the problem ones.

hey yeah ive fixed a few more things like, what ya said helped thanks. also i have a “access none” error for a few things, which i fixed some just dont know how to for all. i have one for a skeletal mesh component variable, so what do i have to cast the variable to my character bp or what?