关于 Warning: Script Msg: No world was found for object (/Script/Tower2.Default__TowerPlayerBase) passed in to UEngine::GetWorldFromContextObject(). 问题

UKismetSystemLibrary::PrintString(this, TEXT(".."));  //会引起Warning: Script Msg: No world was found for object (/Script/...) passed in to UEngine::GetWorldFromContextObject().报错