It's Actually work but with error that say, Blueprint Runtime Error: "Accessed None trying to read property CharNameStart". Blueprint: CharNameStartPoint Function: Execute Ubergraph CharName Start Point Graph: EventGraph Node: Set CharNamePos

I make an GameModeBase class and make an variable that I want store the player Start actors transform.
And I make a blueprint class of PlayerStart get object of GameModeBase that I use on C++ and use as to get that value I make inside C++.

And when I press the play button to see the result, it works fine, but I get the error message as the title says. Is there any way to get rid of this error? Also, is this error likely to cause any future problems?

I soved the problem.