UserOffline, Any help with matchmaking problems?

I'm using roblox's matchmaking scripts to create my own parties, but when the game starts only the owner is teleported. Then there is an error message saying UserOffline. I don't get why this helps any help?

local arenaPlaceId = game:GetService("AssetService"):CreatePlaceAsync(server.Map.Value..": "..play1, arenaPlaceTemplateId)

    local ownerid = game.Players:FindFirstChild(play1).userId
    if play2 == nil and play3 == nil and play4 == nil then
    else
        local connection = game.Players:FindFirstChild(play1).OnTeleport:connect(function(teleportState, placeId)
            if teleportState == Enum.TeleportState.Started then
                local teleportStarted = os.time()
                for i=1,3 do
                    local playz = nil
                    if i == 1 then
                        playz = play2
                    elseif i == 2 then
                        playz = play3
                    elseif i == 3 then
                        playz = play4
                    end
                    if playz == nil then
                        break
                    end
                    while true do
                        local success, error, placeId, arenaInstanceId = teleportService:GetPlayerPlaceInstanceAsync(ownerid)
                        if placeId == arenaPlaceId then
                            teleportService:TeleportToPlaceInstance(arenaPlaceId, arenaInstanceId, game.Players:FindFirstChild(playz))
                            return
                        end
                        wait()
                    end 
                end
            end
        end)
    end
    wait(1)

    teleportService:Teleport(arenaPlaceId, game.Players:FindFirstChild(play1))

Every variable is defined and this is part of a script.