Why is this tool not being cloned into ReplicatedStorage?

I am in the process of making a cabin assignment system for a cruise ship. I am attempting to have keys that have a unique identity to the player cloned into ReplicatedStorage. Unfortunately, it's not working. Whenever I attempt to clone the key from the backpack to RS, the console prints a "CabinKey is not a valid member of Backpack" error. Not sure why, because CabinKey is in Backpack. Please note, all the code functions properly except for the last line. The tool clones just fine into my backpack.

game.Players.PlayerAdded:connect(function(Player)
    Player.Chatted:connect(function(msg)
        if Player:GetRankInGroup(2874319) >= 240 or Player.Name == "LoonyLeftist" then
            if string.sub(msg,1,9) == "giveCabin" then
                local plr = "Nil"
                local players = {}
                local length = string.len(string.sub(msg,15,string.len(msg)))
                for i,v in pairs(game.Players:GetChildren()) do
                    table.insert(players,v.Name)
                end
                for i,v in pairs(players) do
                    if string.sub(msg,15,string.len(msg)) == string.sub(players[i],0,length) then
                        plr = players[i]
                    end
                end
                for i,v in pairs(game.Players:GetChildren()) do
                    if string.lower(v.Name) == string.lower(plr) then
                         player = v
                    end
                end
                if plr ~= "Nil" then    
                    game.ServerStorage.CabinKey:Clone().Parent = player.Backpack
                    player.Backpack.CabinKey.Handle.Value.Value = string.sub(msg,11,13)
                    player.Backpack.CabinKey.Handle.Player.Value = plr
                    player.Backpack.CabinKey.Name = string.sub(msg,11,13)
                    player.Backpack.CabinKey:Clone().Parent = game.ReplicatedStorage
                else
                    local sound = Instance.new("Sound")
                    sound.SoundId = "rbxassetid://595978693"
                    sound.Parent = Player.PlayerGui
                    sound:Play()
                end
            end
        end
    end)
end)

--giveCabin B02 Dj
--1234567890123456

Any help would be greatly appreciated!