DataStore object saving doesn't save?

Ok, so...Hi. I have some problems with my Data store...For the 10th time I ever try to save something...

Here's a more detailed explanation of the issue:

Error I get: ServerScriptService.DataStoreScript:18: attempt to index nil with 'GetChildren'

About the error: I have a folder that should be looped thru when the player leaves the game. That folder(as I test) has objects inside of it. They ARE in the server and they DO exist, but for some reason the script doesn't see the folder.

Where have I tested the script? In studio and in game. I don't know about you, but for me the data stores save in studio as long as I have the *API *and *HTTP * on.

What am I trying to even save?

The object's Name, CFrame(made into X, Y, Z and Orientation values)

Got any other questions?

Ask ahead. I will try and answer them as good and detailed as possible. Tho I hope you don't have because it's kinda late for me now xd (12am) and might not even see them, so if I don't see them you'd loose interest in helping me and forget about this.

Script:

local Players = game.Players
local DataStoreService = game:GetService("DataStoreService")
local DataStore = DataStoreService:GetDataStore("PlotSave")
local Plots = game.Workspace.Plots:GetChildren()


game.Players.PlayerRemoving:Connect(function(player)
	local Key = player.UserId
	local SaveTable = {}
	local ObjectsFolder
	
	for i,v in pairs(Plots) do
		if v.Owner.Value == player then
			ObjectsFolder = v.PlacedObjects
			break
		end
	end
	for i,v in pairs(ObjectsFolder:GetChildren()) do
		if v then
			table.insert(SaveTable,
				{
					["ObjectName"] = v.Name,
					["ObjectCFrame"] = {
						["X"] = v.PrimaryPart.CFrame.X, 
						["Y"] = v.PrimaryPart.CFrame.Y, 
						["Z"] = v.PrimaryPart.CFrame.Z, 
						["Rotation"] = v.PrimaryPart.Orientation.Y}
				}
			)
		end
	end
	
	local Success, ErrorMessage = pcall(function()
		DataStore:SetAsync(Key, SaveTable)
	end)
	if Success then
		print("Successfully saved Data")
		for i,v in pairs(SaveTable) do
			print(v)
		end
	else
		warn("Failed to save Data: ".. tostring(ErrorMessage))
		return;
	end
end)

game.Players.PlayerAdded:Connect(function(player)
	local Key = player.UserId
	local SavedPlot
	local ObjectsFolder
	
	for i,v in pairs(Plots) do
		if v.Owner.Value == player then
			ObjectsFolder = v.PlacedObjects
			break
		end
	end
	local Success, ErrorMessage = pcall(function()
		SavedPlot = DataStore:GetAsync(Key)
	end)
	
	if Success then
		print("Data Loading")
	else
		warn("Data Failed to be read: ".. tostring(ErrorMessage))
	end
	
	if SavedPlot then
		wait(1)
		print("There is a Saved Plot")
		for i,v in pairs(SavedPlot) do
			if v then
				print(SavedPlot[i])
				local SavedModel = game.ReplicatedStorage.Objects:FindFirstChild(v.Name):Clone()
				if SavedModel then
					SavedModel:SetPrimaryPartCFrame(CFrame.new(v.ObjectCFrame.X, v.ObjectCFrame.Y, v.ObjectCFrame.Z) * CFrame.Angles(0, math.rad(v.ObjectCFrame.Rotation), 0))
					SavedModel.Parent = nil
				end
			else
				print("No Objects")
			end
		end
	else
		print("No Saved Plot")
	end
end)