EOS Problem!!!!

https://dev.epicgames.com/community/learning/courses/1px/unreal-engine-the-eos-online-subsystem-oss-plugin/eK7q/unreal-engine-setting-up-a-dedicated-server-to-host-eos-sessions

Hello everyone, I’ve been using c++ for a very short time and I’m having trouble following this tutorial.
The tutorial is very simple and precise, except in one point that I don’t understand what I should do and it gives me an error.
Advice?

I’m stuck at the “Create an EOS Session” .cpp file

Hello! This error is occurring because the HandleCreateSessionCompleted function has not yet been implemented. If you proceed to the next step of the tutorial, you should create the AEOSGameSession::HandleCreateSessionCompleted implementation, and the error should be resolved.