Blueprint Runtime Error: "Accessed None trying to read property PlayerUI"

@Vinicius_Pires
So Hello again.
I tested your Solution in my “BP_Herochar” BP which inherits from my “BP_Basic_Character”, in the “BP_Basic_Character” BP is nothing at the time but i planed to use it for several Characters or eventualy Enemies.

But i cant eliminate the Error, additional i now cant see the “Popup” Text if i walk over a Item, i think i forgot a Variable or something but Unreal Engine says nothing about that so i cant verify this.

I added you a Screenshot:

This is the Eventgraph of my “W_PlayerUI” here it defines if the Text is hidden or not, eventually it helps.

If i want to move the functionality of the “W_PlayerUI” i need to move all Variables, Functions and Notes to the “BP_Herochar” right?

Thanks for your patience with a beginner.

regards Daniel