Could someone help me with "The First Person Element Of A First Person Shooter" blog?

So I am trying to make an FPS game using "The First Person Element Of A First Person Shooter" blog, but I am having trouble on the first step of making the gun appear in front of the camera.

--LocalScript in StarterPack

local Players = game:GetService("Players")
local player = Players.LocalPlayer

local rsStorage = game:GetService("ReplicatedStorage")

local camera = game.Workspace.CurrentCamera
local humanoid = player.CharacterAdded:Wait():WaitForChild("Humanoid")

local viewModel = rsStorage:WaitForChild("viewModel"):Clone()

local function onDied()
    viewModel.Parent = nil
end

local function onUpdate(dt)
    viewModel.Head.CFrame = camera.CFrame
    print("hi")
end

humanoid.Died:Connect(onDied)
game:GetService("RunService").RenderStepped:Connect(onUpdate)

local repWeapon = rsStorage:WaitForChild("FAMAS")
local weapon = repWeapon:Clone()

weapon.Parent = viewModel
viewModel.Parent = camera

local joint = Instance.new("Motor6D")
joint.C0 = CFrame.new(1, 1, 1)
joint.Part0 = viewModel.Head
joint.Part1 = weapon.Handle
joint.Parent = viewModel.Head
print("Done")

It prints "Done" and keeps printing "hi". There are no errors in the output. Also, sorry that the script is kind of long. Another thing is that I can see the viewModel and the FAMAS in random positions in the workspace.