Unable to create an instance of the type "AliginPosition" ?

i was trying to make a pet system with the help of AlvinBlox's video: PET INVENTORY & EQUIPPING PETS!. and i ran into this issue that I don't know how to solve.

ERROR: Unable to create an instance of the type "AliginPosition"

Script:

local function equipPet(player,pet)

local character = player.Character

if pet ~= nil and character ~= nil then
	
	if character:FindFirstChild(player.Name.."'s Pet") then character[player.Name.."'s Pet"]:Destroy() end
	
	pet.Name = player.Name.."'s Pet"
	
	pet:setPrimaryPartCFrame(character.HumanoidRootPart.CFrame)
	
	local modelSize = pet.PrimaryPart.Size
	
	local attachementCharacter = Instance.new("Attachment")
	attachementCharacter.Visible = false
	attachementCharacter.Parent = character.HumanoidRootPart
	attachementCharacter.Position = Vector3.new(1,1,0) + modelSize
	
	local attachmentPet = Instance.new("Attachment")
	attachmentPet.Visible = false
	attachmentPet.Parent = pet.PrimaryPart
	
	local alignPosition = Instance.new("AliginPosition")
	alignPosition.MaxForce = 25000
	alignPosition.Attachment0 = attachmentPet
	alignPosition.Attachment1 = attachementCharacter
	alignPosition.Responsiveness = 25
	alignPosition.Parent = pet
		
	pet.Parent = character
	
end

end

I think you meant Align and not Aligin.