Please help my scripts work on Play Solo but not Online localscript or Regular script?

My Inventory system which allows users to pick up items off the ground (items use a clickdetector system) but if I made the items script that allows them to pick up the item localscript or regular script it still doesn't work online its confusing and annoying me because I need a decent public release for my game

My game

Item script

local Obj = script.Parent

Obj.ClickDetector.MouseClick:connect(function(plr)
    Obj:FindFirstChild('PlrName').Value = plr.Name
    local PlrGUI = game.Players:FindFirstChild(plr.Name).PlayerGui
    if PlrGUI then
        local MaxSlots = {1,2,3,4,5,6}
        for _, v in pairs(MaxSlots) do
            local vx = PlrGUI.Inventory.Frame:FindFirstChild("Slot" .. tostring(v))
            if vx and vx.Item.Value == "" then
                vx.Item.Value = Obj.Name
                Obj:Destroy()
                break
            end
        end
    end
end)

The script that changes the Inventory slot to the item name

script.Parent.MouseButton1Down:connect(function(clicked)
if  script.Parent.Parent.Parent.Slot1Item.Visible == true then
script.Parent.Parent.Parent.Slot1Item.Visible = false
else
script.Parent.Parent.Parent.Slot1Item.Visible = true    
end
end)