Missing Namespaces like Steamworks and LobbyCreated_t

[siten0308]

hello,

I just pulled so I can look at your example, as I am having issues when following your tutorial:
https://www.youtube.com/watch?v=Fx8efi2MNz0
I have to say though, BIG BIG thank you for your tutorial, it helps a lot to understand more on the network manager and Mirror... but when i go to pull the: https://github.com/DapperDino/Mirror-Multiplayer-Tutorials

I get the following errors:
on script MyNetworkManager.cs: the type or namespace 'SteamWorks' cannot be found

this is also same message but different name space:
LobbyCreated_t
GameLobbyJoinRequested_t
AvatarImageLoaded_t

not sure if I am missing additional cs files or classes etc.?

[AppStolz]

instructions:
https://steamworks.github.io/installation/#unity-instructions
File:
https://github.com/rlabrecque/Steamworks.NET/releases/download/15.0.1/Steamworks.NET_15.0.1.unitypackage