Can someone help me debugging a part of an Unreal engine tutorial

I was following the mutiplayer tutorial, by unreal engine on youtube Blueprint Multiplayer: Options Graph | 09 | v4.11 Tutorial Series | Unreal Engine - YouTube
I made it until part 9 where they inplement the save game function, but now the problem starts

My menus works perfectly but the the player setting will not be save due to an error:
I watched the video 2-3 times and tried it over and over again but it wont work.

In addition I get a warning if I dont set "WelcomeMessageVis’’ to be public, but thats not a part of this question.

If you need more info, please let me know im just a newbie trying to learn something

Hello Pjager,

The Game Instance Ref you have highlighted in the picture you linked should be a Save Game Ref reference instead. It’s likely getting past the IsValid check while Save Game Ref is still null since Game Instance Ref is valid and it’s checking the wrong thing.

Thank you for the quick reply
It fixed the issue, a really easy thing but it makes sense