Event tick > Do once node outputs twice

There’s a lot of nodes on my level blueprint.
Yesterday, everything seemed fine but then I don’t remember what I did but now if I (for example) use event tick → do once → print “hello” then it prints it twice! idk why… it’s affecting my whole game cuz it’s putting out two widgets, two animations, stuff like that…

Any fix?

(Also I realised that it’s only doing this in level blueprint and not regular blueprints)