Why does the Print Screen Appears "client -2"?

Hello everyone.
Well im working on a multiplayer game and learned a lot of replication stuff but sometimes i still get a litle confused, like now…
I made a widget that is created locally on my Character blueprint but for some reason when i try to press a button from this widget that will just fire a Print Screen, like this

It fires on Client -2 like this

Why does it fires on Client -2? what is the meaning of client -2?
thank you.

Hello, Ryzon. Watch here:

That’s your player 2 pretty much, if you control the other player and show the message it will say player 1 or server if he is the server.