DarkRP Custom HUD Error: bad argument #1 to 'GetTextSize' (string expected, got nil)

[nicholsml]

Hey there facepunch! I'm getting this error on this HUD that I made following a tutorial via the wiki (the tutorial is outdated by 2 years). Since the code is old, and lacks revision, I'm getting flooded with errors when I join my server for about the first 5 seconds, then they never occur again, and they don't break any aspects of the gamemode (Hud still functions perfectly).

The error I'm getting spammed with is:

[ERROR] lua/includes/modules/draw.lua:86: bad argument #1 to 'GetTextSize' (string expected, got nil)
  1. GetTextSize - [C]:-1
   2. SimpleText - lua/includes/modules/draw.lua:86
    3. DoActualHUD - gamemodes/darkrp/gamemode/client/hud.lua:243
     4. unknown - gamemodes/darkrp/gamemode/client/hud.lua:365

I haven't touched draw.lua, so I'm ignoring that altogether. The error occurred when inserting the following code into hud.lua:

local function DoActualHUD()

--If the variables table has not be initialized, initialize it
LocalPlayer().DarkRPVars = LocalPlayer().DarkRPVars or {}
 
--If the money is not set, don't do anything
local v1 = LocalPlayer().DarkRPVars.money
if not v1 then v1 = "" end
 
--If the salary is not set, don't do anything
local v2 = LocalPlayer().DarkRPVars.salary
if not v2 then v2 = "" end
	draw.RoundedBox(1, 25, ScrH() - 60, 350, 50, Color(50,50,50,175))
	surface.SetDrawColor(255,255,255)
	
	draw.RoundedBox(1, 25, ScrW() - 60, 400, 50, Color(25,25,25,200))
	surface.SetDrawColor(255,255,255)
	
	surface.SetTexture(surface.GetTextureID("gui/silkicons/user"))
	surface.DrawTexturedRect(25 + 5,ScrH() - 57,16,16)
 
	surface.SetTexture(surface.GetTextureID("gui/silkicons/money"))
	surface.DrawTexturedRect(25 + 225,ScrH() - 30,16,16)
 
	surface.SetTexture(surface.GetTextureID("gui/silkicons/money_add"))
	surface.DrawTexturedRect(25 + 225,ScrH() - 57,16,16)
 
	surface.SetTexture(surface.GetTextureID("gui/silkicons/group"))
	surface.DrawTexturedRect(25 + 5,ScrH() - 30,16,16)
 
	surface.SetTexture(surface.GetTextureID("gui/silkicons/heart"))
	surface.DrawTexturedRect(25 + 155,ScrH() - 57,16,16)
 
	surface.SetTexture(surface.GetTextureID("gui/silkicons/shield"))
	surface.DrawTexturedRect(25 + 155,ScrH() - 30,16,16)
	
	draw.SimpleText(LocalPlayer():Nick(),"TargetID", 25 + 25,ScrH() - 40, Color(255,255,255), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP)
	draw.SimpleText("$" .. v1,"TargetID", 25 + 245,ScrH() - 15, Color(255,255,255), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP)
	draw.SimpleText("$" .. v2,"TargetID", 25 + 245,ScrH() - 40, Color(255,255,255), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP)
	draw.SimpleText(LocalPlayer().DarkRPVars.job,"TargetID", 25 + 25,ScrH() - 15, Color(255,255,255), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP)
	draw.SimpleText(LocalPlayer():Health() ,"TargetID", 25 + 175,ScrH() - 40, Color(255,255,255), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP)
	draw.SimpleText(LocalPlayer():Armor() ,"TargetID", 25 + 175,ScrH() - 15, Color(255,255,255), TEXT_ALIGN_LEFT, TEXT_ALIGN_TOP)

end
local function DrawHUD()
	Scrw, Scrh = ScrW(), ScrH()
	RelativeX, RelativeY = 0, Scrh
	
	--Background
	DoActualHUD()
	GunLicense()
	Agenda()
	DrawVoiceChat()
	LockDown()

	Arrested()
	AdminTell()
end

The whole hud.lua:

/*---------------------------------------------------------------------------
HUD ConVars
---------------------------------------------------------------------------*/
local ConVars = {}
local HUDWidth
local HUDHeight

CreateClientConVar("weaponhud", 0, true, false)

local function ReloadConVars()
	ConVars = {
		background = {0,0,0,100},
		Healthbackground = {0,0,0,200},
		Healthforeground = {140,0,0,180},
		HealthText = {255,255,255,200},
		Job1 = {0,0,150,200},
		Job2 = {0,0,0,255},
		salary1 = {0,150,0,200},
		salary2 = {0,0,0,255}
	}

	for name, Colour in pairs(ConVars) do
		ConVars[name] = {}
		for num, rgb in SortedPairs(Colour) do
			local CVar = GetConVar(name..num) or CreateClientConVar(name..num, rgb, true, false)
			table.insert(ConVars[name], CVar:GetInt())

			if not cvars.GetConVarCallbacks(name..num, false) then
				cvars.AddChangeCallback(name..num, function() timer.Simple(0,ReloadConVars) end)
			end
		end
		ConVars[name] = Color(unpack(ConVars[name]))
	end


	HUDWidth = (GetConVar("HudW") or  CreateClientConVar("HudW", 240, true, false)):GetInt()
	HUDHeight = (GetConVar("HudH") or CreateClientConVar("HudH", 115, true, false)):GetInt()

	if not cvars.GetConVarCallbacks("HudW", false) and not cvars.GetConVarCallbacks("HudH", false) then
		cvars.AddChangeCallback("HudW", function() timer.Simple(0,ReloadConVars) end)
		cvars.AddChangeCallback("HudH", function() timer.Simple(0,ReloadConVars) end)
	end
end
ReloadConVars()

local function formatNumber(n)
	n = tonumber(n)
	if (!n) then
		return 0
	end
	if n >= 1e14 then return tostring(n) end
    n = tostring(n)
    sep = sep or ","
    local dp = string.find(n, "%.") or #n+1
	for i=dp-4, 1, -3 do
		n = n:sub(1, i) .. sep .. n:sub(i+1)
    end
    return n
end


local Scrw, Scrh, RelativeX, RelativeY
/*---------------------------------------------------------------------------
HUD Seperate Elements
---------------------------------------------------------------------------*/
local Health = 0
local function DrawHealth()
	Health = math.min(100, (Health == LocalPlayer():Health() and Health) or Lerp(0.1, Health, LocalPlayer():Health()))

	local DrawHealth = math.Min(Health / GAMEMODE.Config.startinghealth, 1)
	local Border = math.Min(6, math.pow(2, math.Round(3*DrawHealth)))
	draw.RoundedBox(Border, RelativeX + 4, RelativeY - 30, HUDWidth - 8, 20, ConVars.Healthbackground)
	draw.RoundedBox(Border, RelativeX + 5, RelativeY - 29, (HUDWidth - 9) * DrawHealth, 18, ConVars.Healthforeground)

	draw.DrawText(math.Max(0, math.Round(LocalPlayer():Health())), "DarkRPHUD2", RelativeX + 4 + (HUDWidth - 8)/2, RelativeY - 32, ConVars.HealthText, 1)

	-- Armor
	local armor = LocalPlayer():Armor()
	if armor ~= 0 then
		draw.RoundedBox(2, RelativeX + 4, RelativeY - 15, (HUDWidth - 8) * armor / 100, 5, Color(0, 0, 255, 255))
	end
end

local function DrawInfo()
	LocalPlayer().DarkRPVars = LocalPlayer().DarkRPVars or {}
	local Salary = 	LANGUAGE.salary .. CUR .. (LocalPlayer().DarkRPVars.salary or 0)

	local JobWallet =
	LANGUAGE.job .. (LocalPlayer().DarkRPVars.job or "") .. "\n"..
	LANGUAGE.wallet .. CUR .. (formatNumber(LocalPlayer().DarkRPVars.money) or 0)

	local wep = LocalPlayer( ):GetActiveWeapon( );

	if IsValid(wep) and GAMEMODE.Config.weaponhud then
        local name = wep:GetPrintName();
		draw.DrawText("Weapon: "..name, "UiBold", RelativeX + 5, RelativeY - HUDHeight - 18, Color(255, 255, 255, 255), 0)
	end

	draw.DrawText(Salary, "DarkRPHUD2", RelativeX + 5, RelativeY - HUDHeight + 6, ConVars.salary1, 0)
	draw.DrawText(Salary, "DarkRPHUD2", RelativeX + 4, RelativeY - HUDHeight + 5, ConVars.salary2, 0)

	surface.SetFont("DarkRPHUD2")
	local w, h = surface.GetTextSize(tostring(Salary))

	draw.DrawText(JobWallet, "DarkRPHUD2", RelativeX + 5, RelativeY - HUDHeight + h + 6, ConVars.Job1, 0)
	draw.DrawText(JobWallet, "DarkRPHUD2", RelativeX + 4, RelativeY - HUDHeight + h + 5, ConVars.Job2, 0)
end

local Page = Material("icon16/page_white_text.png")
local function GunLicense()
	if LocalPlayer().DarkRPVars.HasGunlicense then
		surface.SetMaterial(Page)
		surface.SetDrawColor(255, 255, 255, 255)
		surface.DrawTexturedRect(RelativeX + HUDWidth, ScrH() - 34, 32, 32)
	end
end

local function Agenda()
	local DrawAgenda, AgendaManager = DarkRPAgendas[LocalPlayer():Team()], LocalPlayer():Team()
	if not DrawAgenda then
		for k,v in pairs(DarkRPAgendas) do
			if table.HasValue(v.Listeners or {}, LocalPlayer():Team()) then
				DrawAgenda, AgendaManager = DarkRPAgendas[k], k
				break
			end
		end
	end
	if DrawAgenda then
		draw.RoundedBox(10, 10, 10, 460, 110, Color(0, 0, 0, 155))
		draw.RoundedBox(10, 12, 12, 456, 106, Color(51, 58, 51,100))
		draw.RoundedBox(10, 12, 12, 456, 20, Color(0, 0, 70, 100))

		draw.DrawText(DrawAgenda.Title, "DarkRPHUD1", 30, 12, Color(255,0,0,255),0)