Dedicated server steam

Hi,

I wanna make like Valorant concept, apparently this is not really easy to do in unreal (bit weird because its one of the most popular concepts)

Goal;

  • Multiplayer matchmaking with lobby system
  • Dedicated server
  • All clients joining at the same time who are all matched for one match

I have seen a lot of youtube video to puzzle together what I want.

What I did;

  • Downloading Unreal from git so I can build a dedicated server
  • Created an API to matchmake and assign a server (all api calls, thinking to experiment with sockets)
  • Created Menu + join session + searching for match

But now I got stuck on Steam, when I run the dedicated server and wanna join it tells me;

logonline: Warning: STEAM: Failed to initialize Steam, this could be due to a Steam server and client running on the same machine. Try running with -NOSTEAM on the cmdline to disable.

I cannot create a dedicated server and join it my self?