Everytime same error, my friend tried it too, unfortunatelly he has exactly same error

History: (CoopNETChameleonModuleHost Suburbs-3.CoopNETChameleonModuleHost0, Function NicksCoop.CoopNETChameleonModuleHost.Tick) <- UObject::ProcessEvent <- AActor::Tick <- TickAllActors <- (NetMode=2) <- ULevel::Tick <- TickLevel <- UGameEngine::Tick <- UpdateWorld <- MainLoop