InvokeServer returns nil Data?

So, i'm trying to make a Client Sided Leaderboard, comparing Highest to Lowest ranked players based on their Values.

The Server Sided OnServerInvoke portion (this returns the Table that is nil on client side, but not nil on Server Side):

local UpdateVersion = script.Version.Value
local ClientRepLBData = game:GetService("DataStoreService"):GetOrderedDataStore("ClientRepLBDataV:"..UpdateVersion)
local ClientFunction = game.ReplicatedStorage.ClientLeaderboard

ClientFunction.OnServerInvoke = function()
    local Success, Err = pcall(function()
        local ClientLBData = ClientRepLBData:GetSortedAsync(false, 25)
		local ClientLBPage = ClientLBData:GetCurrentPage()
		local DataToSend = {}
        for ClientLBRank, ClientLBData in ipairs(ClientLBPage) do
            table.insert(DataToSend, {ClientLBRank, ClientLBData.key, ClientLBData.value})
		end
		wait()
		return DataToSend
    end)
    if not Success then
        error(Err)
    end
end

This is the Client Sided portion, that would create the leaderboard based off the returned data (this prints nil):

if game:IsLoaded() then
	
	local player = game.Players.LocalPlayer
	local frame = script.Parent
	local ui = frame.Parent
	local lbframe = frame.RepLeaderboard
	local RepStorage = game.ReplicatedStorage
	local ClientLBEvent = RepStorage:WaitForChild('ClientLeaderboard')

	while wait(45) do
		for i,v in pairs(lbframe:GetChildren()) do 
			if v:IsA('Frame') then
				v:Destroy()
			end
		end
		wait()
		local Data = ClientLBEvent:InvokeServer()
		if Data ~= nil then
			for i = 1, #Data do
				local CopyFrame = frame.LBFrame.Frame:Clone()
				if i == 1 then
					CopyFrame.Rank.TextColor3 = Color3.fromRGB(255, 170, 0)
					CopyFrame.Username.TextColor3 = Color3.fromRGB(255, 170, 0)
					CopyFrame.Level.TextColor3 = Color3.fromRGB(255, 170, 0)
				elseif i == 2 then
					CopyFrame.Rank.TextColor3 = Color3.fromRGB(180, 180, 180)
					CopyFrame.Username.TextColor3 = Color3.fromRGB(180, 180, 180)
					CopyFrame.Level.TextColor3 = Color3.fromRGB(180, 180, 180)
				elseif i == 3 then
					CopyFrame.Rank.TextColor3 = Color3.fromRGB(210, 105, 30)
					CopyFrame.Username.TextColor3 = Color3.fromRGB(210, 105, 30)
					CopyFrame.Level.TextColor3 = Color3.fromRGB(210, 105, 30)
				end
				CopyFrame.Visible = true
				CopyFrame.Name = tostring('Player'..Data[1])
				CopyFrame.Rank.Text = Data[1]
				CopyFrame.Username.Text = Data[2]
				CopyFrame.Level.Text = Data[3]
				CopyFrame.Parent = lbframe
				CopyFrame.Position = UDim2.new(0, 0, CopyFrame.Position.Y.Scale + (0.032 * #lbframe:GetChildren()), 0)
			end
		else
			print'data was nil'
		end
		
	end
	
end

If anyone could help, or provide some information that could lead me to the misunderstanding of this, it would be highly appreciated!