If you’re encountering the C2248 error in Unreal Engine 5 (Cannot access private member), it means your code is trying to access a class member (variable or function) that is marked as private. In C++, private members can only be accessed within the class itself or by friend classes/functions. This error often occurs when you accidentally try to access a private member from outside the class, such as in another class or function.

To fix this, you have a few options:

1. Change the access modifier: If the member doesn’t need to be private, change it to public or protected in the class definition.
2. Use getters/setters: If the member should remain private, create public getter and setter functions to access it safely.
3. Friend classes/functions: If specific external classes or functions need access, declare them as friend inside the class.

For example, if you have:

class MyClass {  
private:  
    int MyPrivateVar;  
};  

And you try to access MyPrivateVar from outside the class, you’ll get the C2248 error. Instead, add a public getter:

class MyClass {  
public:  
    int GetMyPrivateVar() const { return MyPrivateVar; }  
private:  
    int MyPrivateVar;  
};  

This Unreal Engine 5 C++ access error is common when working with class encapsulation, so always double-check your access modifiers and use proper design patterns to avoid it.