How do i fix the following problems of items not clone and/or not saving?

 local Players = game:GetService("Players")
local DataStoreService = game:GetService("DataStoreService")
local ServerStorage = game:GetService("ServerStorage")

local playerdata = DataStoreService:GetDataStore("testdata")

local tools = ServerStorage.Tools
local inventories = ServerStorage.Inventories

Players.PlayerAdded:Connect(function(client)
    local key = "client_" .. client.UserId
    local inventory
    local err, su = pcall(function()
        inventory = playerdata:GetAsync(key)
    end)

    if su then
        inventory = playerdata:GetAsync(key)
    else
        print("Failed to get datastore")
        script.Parent.SendError:Fire(client.UserId, client.Name, err)
        game:GetService("TeleportService"):Teleport(*insert place id here*, client)
    end

    local inventory_folder = Instance.new("Folder")
    inventory_folder.Name = client.Name
    inventory_folder.Parent = inventories

    for _, name in ipairs(inventory or { }) do
        local tool = tools[name]
        print(tool.Name)
        tool:Clone().Parent = client.Backpack
        tool:Clone().Parent = inventory_folder
    end
end)

Players.PlayerRemoving:Connect(function(client)
    local key = "client_" .. client.UserId
    local tools = { }
    local bkey = "backup_" .. client.UserId
    local inventory_folder = inventories[client.Name]

    for _, item in ipairs(inventory_folder:GetChildren()) do
        table.insert(tools, item.Name)
    end
    playerdata:UpdateAsync(key, function(prev)
        playerdata:SetAsync(bkey, prev)
        return tools
    end)

    inventory_folder:Destroy()
end)

local remote = game:GetService("ReplicatedStorage").Buy

local ServerStorage = game:GetService("ServerStorage")
local tools = ServerStorage.Tools
local inventories = ServerStorage.Inventories

remote.Event:Connect(function(client, request)
    local inventory_folder = inventories[client.Name]
    local tool = tools[request]
    if inventory_folder:FindFirstChild(tool.Name) == nil then
    tool:Clone().Parent = client.Backpack
    tool:Clone().Parent = inventory_folder  
    end
end)

basically the error function is supposed to report errors and send the player to a limbo housing, i need to clone the item to the players inventory and i cant clone and save the data even with manual cloning. I cant seem to identify the problems