I've make Roblox TRADE system GUI but it's error How fix?

It's error My script is going to be like

When Players join clone GUI the name of the player Get Tools Name

(But I didn't do Trade system yet)

-- Script get Plr Names --

-- Server

local Remote = game.ReplicatedStorage.getPlayerName

game.Players.PlayerAdded:Connect(function(plr)
    Remote:FireAllClients(plr)
end)

-- Client
local Remote = game.ReplicatedStorage.getPlayerName

Remote.OnClientEvent:Connect(function(plr)
    local Dname = script.Parent
    Dname.Text = plr.DisplayName
    local DnameClone = Dname:Clone()
    DnameClone.Text = plr.DisplayName
end)

-- Script Get item name --

local function getItemFromBackpack(plr, tool)
    local backpack = plr:FindFirstChildOfClass("Backpack")
    if backpack then
        local le = script.Parent
        le.Text = tool.Name
    end
end