Remote function not returning serverside table?

Hey, So I am trying to make a system where the client asks via a remote event for a table stored in ServerStorage But there is an error that keeps popping up saying

"bad argument #1 to 'pairs' (table expected, got nil)"

I don't understand since it clearly has returned the table through the server script...

Here is the code

CLIENT SIDE

local plr = game:GetService("Players").LocalPlayer
local fooditems = game:GetService("ReplicatedStorage").FoodBooking.GetItems:InvokeServer(game:GetService("Players").LocalPlayer.PlrClass.Value)

for i,v in pairs(fooditems) do
	print(v.Name)
end

SERVER SIDE

game:GetService("Players").PlayerAdded:connect(function(plr)
	local class = Instance.new("StringValue",plr)
	class.Name = "PlrClass"
	class.Value = "EC"
end)

game:GetService("ReplicatedStorage").FoodBooking.GetItems.OnServerInvoke = function(pclass)
	if game:GetService("ServerStorage").MenuItems.ShortHaul.Value == true then
		return game:GetService("ServerStorage").MenuItems.SH:GetChildren()
	else
		if pclass == "EC" then
			return game:GetService("ServerStorage").MenuItems.LH.EC:GetChildren()
		elseif pclass == "BC" then
			return game:GetService("ServerStorage").MenuItems.LH.BC:GetChildren()
		end
	end
end

Thanks.