Attempt to call a nil value on something that exists? line 14 server script

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-- Local Script

local sss = game:GetService("ServerScriptService")
local rs = game:GetService("ReplicatedStorage")
local players = game:GetService("Players")
local player = players.LocalPlayer
local remotes = rs:WaitForChild("Remotes")
local lick4 = remotes.Lick2
local lolipop4 = script.Parent
local mouse = player:GetMouse()
local clicked = false
local licktimeModule = require(rs.toolLick)
local char = player.Character or player.CharacterAdded:wait()
local backpack = player:WaitForChild("Backpack")
local tool_Name4 = script.Parent.Name
local tool4 = script.Parent
local soundService = game:GetService("SoundService")
local sounds = soundService:WaitForChild("Sounds")
local licksound = sounds.lickSound

lolipop4.Activated:Connect(function()


    if not clicked then

        clicked = true
        lick4:FireServer(tool_Name4,tool4)
        licksound:Play()
        licktimeModule.TringPop1cooldown()
        clicked = false


    end

end)

-- Server Script 

lick2.OnServerEvent:connect(function(player,tool4,tool_Name4)-- TringPop1 Event Fired
        warn("Lick2 event fired")

        print(tool_Name4)
        local dataFolder = playerdata:FindFirstChild(player.Name)


        if not  dataFolder then 
            return ("noFile")
        else

            local lickAdditionValue4 = tool4:FindFirstChild("TringPop1lickValue").Value
            player.leaderstats.Licks.Value = player.leaderstats.Licks.Value + lickAdditionValue4


            while wait() do
                for i,v in pairs (backpack:GetChildren() and char:GetChildren()) do
                    if v == tool4 or v.Name == tool_Name4 then
                        print("Tool1 found")
                        if player.leaderstats.Licks.Value == (136) then
                            player.leaderstats.Licks.Value = player.leaderstats.Licks.Value - lickAdditionValue4

                        end
                    end
                end
                break
            end
        end 
            wait(5)
            print(player.leaderstats.Licks.Value)

    end)-- TringPop1 Event End