Http:JSONDecode: Argument 1 is missing or nil?

Http:JSONDecode error: Argument 1 is missing or nil

I've been trying to do a script where you can save a table to a datastore. Here is my current script:

game.Players.PlayerAdded:Connect(function(player)
	if ds:GetAsync(player.UserId) ~= nil then
		local toLoad = Http:JSONDecode(ds:GetAsync(player.UserId))
	
		local statStats = toLoad.stats
		local cashCash = toLoad.cash
		
		if statStats == nil then
			local stats = Instance.new("Folder")
			stats.Name = "leaderstats"
			stats.Parent = player
			
			local cash = Instance.new("IntValue")
			cash.Name = "Cash"
			cash.Parent = stats
			
			wait(10)
			
			cash.Value = math.random(1,9999999)
			
			wait(5)
		
			repeat
				cash.Value = math.random(1,9999999)
				be:Fire(cash.Value, player.Name)
				wait(5)
			until player.Parent == nil
		
			game.Players.PlayerRemoving:Connect(function(plr)
				local save = {}
				table.insert(save, 1, cash)
				table.insert(save, 2, stats)
				
				ds:SetAsync(plr.UserId, save)
			end)
		elseif (statStats ~= nil and statStats:IsA("Folder")) or statStats ~= nil then
			statStats.Name = "leaderstats"
			statStats.Parent = player
			
			cashCash.Name = "Cash"
			cashCash.Parent = statStats
			
			wait(10)
			
			repeat
				wait(5)
				cashCash.Value = math.random(1,9999999)
				be:Fire(cashCash.Value, player.Name)
			until player.Parent == nil
			
			game.Players.PlayerRemoving:Connect(function(plr)
				local save = {}
				table.insert(save, 1, cashCash)
				table.insert(save, 2, statStats)
				
				ds:SetAsync(plr.UserId, Http:JSONEncode(save))
				
				warn(ds:GetAsync(plr.UserId))
			end)
		end
	else
		warn("Datastore is ", nil, "!")
		
		local stats = Instance.new("Folder")
		stats.Name = "leaderstats"
		stats.Parent = player
		
		local cash = Instance.new("IntValue")
		cash.Name = "Cash"
		cash.Parent = stats
		
		wait()
		
		cash.Value = math.random(1,9999999)
		
		wait(5)
		
		repeat
			cash.Value = math.random(1,9999999)
			be:Fire(cash.Value, player.Name)
			wait(5)
		until player.Parent == nil
		
		game.Players.PlayerRemoving:Connect(function(plr)
			local save = {}
			table.insert(save, 1, cash)
			table.insert(save, 2, stats)
			
			ds:SetAsync(plr.UserId, save)
		end)
	end
end)

Everytime i try to get the table, it returns nil. Someone know why?

Well, instead of using JSON in table, you can save it simply.

-- DS is assumable as your Datastore is not mentioned
local DS = game;GetService("DataStoreService"):GetDataStore("BLAHBLAHBLAH")

local save = {}
table.insert(save, 1, cashCash)
table.insert(save, 2, statStats)

DS:SetAsync(plr.UserId, save)

-- And to get your data, you can do:
local toLoad = DS:GetAsync(player.UserId)

Lemme know if it helps!