SetPrimaryCFrame() failed because no PrimaryPart has been set.(Error)?

I'm trying to teleport a horse model to a player, buy my code is giving me the error that's in the title.

Code:

script.Spawn.OnServerEvent:Connect(function(Player)
    if not game.Workspace:FindFirstChild(Player.Name .. "'s Horse") and Player.Stats.HasHorse.Value == 1 then
	        local Horse = game:GetService("ReplicatedStorage").Horses.BasicHorse:Clone()
	        Horse.Name = Player.Name .. "'s Horse"
	        Horse.Parent = game.Workspace
	        Horse:MakeJoints() -- to make sure the horse doesn't fall apart
	        Horse:SetPrimaryPartCFrame(Player.Character.HumanoidRootPart.CFrame)
	    elseif game.Workspace:FindFirstChild(Player.Name .. "'s Horse") and Player.Stats.HasHorse.Value == 1 then
	        game.Workspace[Player.Name.."'s Horse"]:Destroy()
	  end
end)

Thanks for reading