Unrelated to my other issue, but I cannot compile my project and the error messages do not make sense to me. I have not altered my code in any way. Neither Unreal nor VS can compile my project.
Please post your code.
You are probably inheriting from the wrong class, your error mentions you are overridong functions in your child class that aren’t present in your parent class.
Fix that first before taking on the replication errors (might be missing implementation in cpp)
If you are replicating anything in that class and you need to handle it in GetLifetimeReplicatedProps. Either remove any replication from that class or add the function override and variable handlers.