Issue with datastore saving whenever the player leaves, can someone help diagnose it?

Okay- I am very much new to scripting, so there is a chance that the issue is very obvious. The code below -works-, as in, almost all of it but one single line.

local serverScriptService = game:GetService("ServerScriptService")
local dataStoreService = game:GetService("DataStoreService")
local httpService = game:GetService("HttpService")

local dataValues = script.dataValues

local serverModules = serverScriptService.serverModules
local dataStore = dataStoreService:GetDataStore("player_Data2")


--Load Data
game.Players.PlayerAdded:Connect(function(plr)
	local success, err = pcall(function()
	local key = "ID-".. tostring(plr.UserId)
	local getSave = dataStore:GetAsync(key)
	local dataFolder = Instance.new("Folder", plr)
	dataFolder.Name = "dataFolder"
	
	--Creates a copy of all datavalues and pastes them into DataFolder. It also makes sure each player has updated datavalues if I add a new one.
	for i, v in pairs(dataValues:GetChildren()) do
		local newData = Instance.new(v.ClassName)
		newData.Name = v.Name
		newData.Value = v.Value
		newData.Parent = dataFolder
	end
	--Check if the player already has data
	if getSave then
		--Has data, so we simply load the saved values into the values in the dataFolder
		for i, v in pairs(dataValues:GetChildren()) do
			local decodedData = getSave
			dataFolder[v.Name].Value = decodedData[i]
			print(i, v.Name, v.Value)
		end
	else
		--Does not have data, so we create an array of data for them.
		local saveData = {}
		for i, v in pairs(dataFolder:GetChildren()) do
			table.insert(saveData, v.Value)
			print(i, v.Name, v.Value)
		end
		local encodedData = httpService:JSONEncode(saveData)
		dataStore:SetAsync(key, encodedData)
	end
	end)
	if err then
		print("Error Loading Data.")
	end
end)

--Save Data
game.Players.PlayerRemoving:Connect(function(plr)
	local success, err = pcall(function()
		local dataFolder = plr:WaitForChild("dataFolder")
		local dataList = dataFolder:GetChildren()
		local key = "ID-".. tostring(plr.UserId)
		local saveData = {}
		for i, v in pairs(dataList) do
			table.insert(saveData, v.Value)
			print(i, v.Name, v.Value)
		end
		local encodedData = httpService:JSONEncode(saveData)
		dataStore:SetAsync(key, encodedData)
	end)
	if err then
		print("Error Saving Data.")
	end
end)

The issue comes in game.Players.PlayerRemoving... Specifically this line, " dataStore:SetAsync(key, encodedData)". Everything up to that point works, just for some reason it doesn't save the data, albeit, when the player joins, and has no data, the same code does work. So I am confused about this.

Never mind guys! I actually found out how to fix it myself. The new code is documented below, albeit with some other changes, (other errors that I found in the here and there that I didn't notice yet) Basically, removing the old data first before then setting the new data is what I needed to do.

local serverScriptService = game:GetService("ServerScriptService")
local dataStoreService = game:GetService("DataStoreService")
local httpService = game:GetService("HttpService")

local dataValues = script.dataValues

local serverModules = serverScriptService.serverModules
local dataStore = dataStoreService:GetDataStore("player_Data2")


--Load Data
game:GetService("Players").PlayerAdded:Connect(function(plr)
	local success, err = pcall(function()
	local key = "ID-".. tostring(plr.UserId)
	local getSave = dataStore:GetAsync(key)
	local dataFolder = Instance.new("Folder", plr)
	dataFolder.Name = "dataFolder"
	
	--Creates a copy of all datavalues and pastes them into DataFolder. It also makes sure each player has updated datavalues if I add a new one.
	for i, v in pairs(dataValues:GetChildren()) do
		local newData = Instance.new(v.ClassName)
		newData.Name = v.Name
		newData.Value = v.Value
		newData.Parent = dataFolder
	end
	--Check if the player already has data
	if getSave then
		--Has data, so we simply load the saved values into the values in the dataFolder
		local dataList = dataFolder:GetChildren()
		for i, v in pairs(dataList) do
			local decodedData = httpService:JSONDecode(getSave)
			v.Value = decodedData[i]
			print(decodedData[i])
		end
		print(dataStore:GetAsync(key))
	else
		--Does not have data, so we create an array of data for them.
		local saveData = {}
		for i, v in pairs(dataFolder:GetChildren()) do
			table.insert(saveData, v.Value)
		end
		local encodedData = httpService:JSONEncode(saveData)
		dataStore:SetAsync(key, encodedData)
	end
	end)
	if err then
		print("Error Loading Data.")
	end
end)

--Save Data
game:GetService("Players").PlayerRemoving:Connect(function(plr)
	local success, err = pcall(function()
		local dataFolder = plr:WaitForChild("dataFolder")
		local dataList = dataFolder:GetChildren()
		local key = "ID-".. tostring(plr.UserId)
		dataStore:RemoveAsync(key)
		local saveData = {}
		for i, v in pairs(dataList) do
			table.insert(saveData, v.Value)
			print(i, v.Name, v.Value)
		end
		local encodedData = httpService:JSONEncode(saveData)
		dataStore:SetAsync(key, encodedData)
	end)
	if err then
		print("Error Saving Data.")
	end
end)