Datastore not loading data correctly?

DataBaseStore = game:GetService('DataStoreService'):GetDataStore('Sim:002')
local datafolder = script.Data

game.Players.PlayerAdded:Connect(function(Player)

    local key = "PlayerID=" .. Player.userId
    local GetSave = DataBaseStore:GetAsync(key)

    local datas = datafolder:Clone()
    datas.Parent = Player

    if GetSave then
        -- player has data

        for i, dataf in pairs(datafolder:GetChildren()) do
            if dataf:IsA('Folder') then
                for i,v in pairs(dataf:GetChildren()) do
                    local name = tonumber(v)
                    v.Value = GetSave[name]
                    print('Data loaded for ' .. i, v, v.Value)
                end
            end
        end

    else

        local statstosave = {}

        for i, dataf in pairs(datas:GetChildren()) do
            if dataf:IsA('Folder') then
                for i, folderitems in pairs(dataf:GetChildren()) do
                    table.insert(statstosave, folderitems.Value)
                    print(i, folderitems.Name, folderitems.Value)
                end
            end
        end
        DataBaseStore:SetAsync(key, statstosave)

    end

end)

game.Players.PlayerRemoving:Connect(function(Player)

    local key = "PlayerID=" .. Player.userId

    local datas = Player:WaitForChild('Data')

    local statstosave = {}

    for i, dataf in pairs(datas:GetChildren()) do
        if dataf:IsA('Folder') then
            for i, folderitems in pairs(dataf:GetChildren()) do
                table.insert(statstosave, folderitems.Value)
                print(i, folderitems.Name, folderitems.Value)
            end
        end
    end
    DataBaseStore:SetAsync(key, statstosave)
end)

I get this error on line 21 - 00:49:16.475 - ServerScriptService.Data:21: bad argument #3 to 'Value' (string expected, got nil)

Edit - heres the folder and its values im trying to save: http://prntscr.com/o16951