what happened to the Lobby Beacon classes?

Im looking for lobby beacon classes to incorporate into my current lobby system so i can use ALobbyBeaconState instead of using client/host beacons and alot of custom RPC calls to handle everything for replication, but I cannot figure out where the classes are to create them. I see them listed in the docs but i cannot create them or include them inside of UE4 nor do I see any documentation on including them. Any ideas?
https://docs.unrealengine.com/en-US/…ost/index.html
https://docs.unrealengine.com/en-US/…ent/index.html
https://docs.unrealengine.com/en-US/…ate/index.html

Edit: thanks to help from someone on the discord I figured out why, but whenever I enable the Online Framework plugin my engine will not get past 73% without a crash.
Edit: fixed

Can you please tell me how you fixed this issue
Edit: never mind I just forgot to add the actual “Online Framework Plugin” in the engine