Save and load player position script won't work?

Script to update player position every so often:

game.Players.PlayerAdded:Connect(function(player)
	local pos = player:WaitForChild("PlayerData").PosValue
	player.CharacterAdded:Connect(function(character)
		while true do
			wait(5)
			pos.Value = character.HumanoidRootPart.Position
		end
	end)
end)

Datastore server script:

local DSS = game:GetService("DataStoreService")
local plrposition = DSS:GetDataStore("plrPosition")

game.Players.PlayerAdded:Connect(function(player)
	player.CharacterAdded:Connect(function(character)
		local plrdata = Instance.new("Folder")
		plrdata.Name = "PlayerData"
		plrdata.Parent = player
		
		local pos = Instance.new("Vector3Value")
		pos.Name = "PosValue"
		pos.Parent = plrdata
		pos.Value = plrposition:GetAsync(player.UserId) or character.HumanoidRootPart.Vector3
		character.HumanoidRootPart.Vector3 = Vector3.new(pos.Value)
		game.Players.PlayerRemoving:Connect(function(player)
			plrposition:SetAsync(player.UserId, pos.Value)
		end)
		while wait(15) do
			plrposition:SetAsync(player.UserId, pos.Value)
		end
	end)
end)

However, they just give some errors that I don't know how to fix. API Services are on. What it's meant to do is the first script saves the player's position every so often by setting a value to it's position. Second script is the datastore script that loads or saves the value and also loads the player's last saved position. Is there an easier or better way to do this?