I wanted to learn how to make fps framework but i got this error can someoen help me??

The script--




repeat
	wait()
until game:IsLoaded()

local plr = game.Players.LocalPlayer
local char = plr.Character
local mouse = plr:GetMouse()
local cam = workspace.CurrentCamera

local Run = game:GetService("RunService")

local RS = game.ReplicatedStorage
local GunModules = RS:WaitForChild("GunModules")
local GunModels = RS:WaitForChild("GunModels")

local Primary = "AK74"
local WeaponInHand
local WeaponData

local maincf = CFrame.new()

plr.CameraMode = Enum.CameraMode.LockFirstPerson

Run.RenderStepped:Connect(function()
	if WeaponInHand then
		WeaponInHand:SetPrimaryPartCFrame(
			cam.CFrame
			* maincf                -- The error is here
		)
	end
end)


function setup(weapon)
	WeaponData = require(GunModules:WaitForChild(weapon))
	
	maincf = WeaponData
	
	WeaponInHand = GunModels:WaitForChild(weapon)
	WeaponInHand.PrimaryPart = WeaponInHand:WaitForChild("Handle")
	WeaponInHand.Parent = cam
	for i, part in pairs(WeaponInHand:GetChildren()) do
		if part:IsA("BasePart") then
			part.Anchored = true
			part.CanCollide = false
		end
	end
end

setup(Primary)
AnonymousEdited