HelpCan someome please help?

local tblSpectators = {};
local tblAdministrators = {};
local tblDefaultGroups = {
	"user",
	"guest",
	"0"
};

local Color = Color;
local Entity = Entity;
local LocalPlayer = LocalPlayer;
local hook = hook;
local table = table;
local surface = surface;
local IsValid = IsValid;
local chat = chat;
local draw = draw;

local strCheatName = "uguuu~~~~ - by konakona~ (https://www.youtube.com/user/INTELINSIDECHANNEL)";
local tblColors = {
	white = Color(240, 240, 240, 255),
	cheatNameColor = Color(40, 150, 240, 255),
	green = Color(150, 240, 50, 255),
	red = Color(240, 150, 50, 255)
};

local function DrawString(hFont, bCenter, pointX, pointY, colColor, strText)
	draw.SimpleTextOutlined(strText, hFont, pointX, pointY, colColor, bCenter, bCenter, 1, Color(20, 20, 20, 200));
end

hook.Add("DrawOverlay", "ListStuff", function()
	local ScrW = surface.ScreenWidth();
	DrawString("Default", TEXT_ALIGN_CENTER, (ScrW / 4) * 2, 15, tblColors.green, strCheatName);
	local pLocalPlayer = LocalPlayer();
	for i = 0, 8192 do -- Highest entity index is 8192, I could use player.GetAll() but do it yourself.
		local pEntity = Entity(i);
		if (!IsValid(pEntity)) then
			continue;
		end
		if (!pEntity:IsPlayer()) then
			continue;
		end
		
		-- The following code lists spectators into a table called tblAdministrators.
		local strPlayerGroup = pEntity:GetNWString("usergroup"); -- If anyone have a sig to GetNWString please share it, ty
		if (!table.HasValue(tblDefaultGroups, strPlayerGroup)) then
			if (!table.HasValue(tblAdministrators, pEntity)) then
				table.insert(tblAdministrators, pEntity);
				-- a new administrator has risen.
				chat.AddText(tblColors.cheatNameColor, "[" .. strCheatName .. "] ", tblColors.green, "A new administrator has risen! -> " .. (pEntity:Nick() || "unnamed") .. " (" .. strPlayerGroup .. ")");
			end
		end
		
		-- The following code lists spectators into a table called tblSpectators.
		local pObserverTarget = pEntity:GetObserverTarget();
		if (IsValid(pObserverTarget)) then
			if (pObserverTarget == pLocalPlayer) then
				if (!table.HasValue(tblSpectators, pEntity)) then
					table.insert(tblSpectators, pEntity);
					-- a new spectator has risen.
					chat.AddText(tblColors.cheatNameColor, "[" .. strCheatName .. "] ", tblColors.green, "A new spectator has risen! -> " .. (pEntity:Nick() || "unnamed") .. " (" .. strPlayerGroup .. ")");
				end
			end
		end
	end

	DrawString("Default", TEXT_ALIGN_CENTER, (ScrW / 4) * 3, 5, tblColors.cheatNameColor, "Spectators:");
	for i = 0, #tblSpectators do
		local pSpectator = tblSpectators[i];
		if (!IsValid(pSpectator)) then
			table.remove(tblSpectators, i);
			-- chat.AddText(tblColors.cheatNameColor, "[" .. strCheatName .. "] ", tblColors.red, (pSpectator:Nick() || "unnamed") .. " is no longer spectating you. (left server)");
			continue;
		end
		
		local strPlayerGroup = pSpectator:GetNWString("usergroup"); -- If anyone have a sig to GetNWString please share it, ty
		-- draw them here.
		DrawString("Default", TEXT_ALIGN_CENTER, (ScrW / 4) * 3, 5 + (i * 10), tblColors.white, (pSpectator:Nick() || "unnamed") .. " (" .. strPlayerGroup .. ")");
		
		local pObserverTarget = pSpectator:GetObserverTarget();
		if (!IsValid(pObserverTarget)) then
			table.remove(tblSpectators, i);
			chat.AddText(tblColors.cheatNameColor, "[" .. strCheatName .. "] ", tblColors.red, (pSpectator:Nick() || "unnamed") .. " is no longer spectating you.");
			continue;
		end
		if (pObserverTarget != pLocalPlayer) then
			table.remove(tblSpectators, i);
			if (pObserverTarget:IsPlayer()) then
				chat.AddText(tblColors.cheatNameColor, "[" .. strCheatName .. "] ", tblColors.red, (pSpectator:Nick() || "unnamed") .. " is no longer spectating you. (now spectating " .. (pObserverTarget:Nick() || "unnamed") .. ")");
			else
				chat.AddText(tblColors.cheatNameColor, "[" .. strCheatName .. "] ", tblColors.red, (pSpectator:Nick() || "unnamed") .. " is no longer spectating you.");
			end
		end
	end

	DrawString("Default", TEXT_ALIGN_CENTER, (ScrW / 4) * 1, 5, tblColors.cheatNameColor, "Administrators:");
	for i = 0, #tblAdministrators do
		local pAdministrator = tblAdministrators[i];
		if (!IsValid(pAdministrator)) then
			table.remove(tblAdministrators, i);
			-- chat.AddText(tblColors.cheatNameColor, "[" .. strCheatName .. "] ", tblColors.red, "Administrator " .. (pAdministrator:Nick() || "unnamed") .. " has left the server.");
			continue;
		end
		
		local strPlayerGroup = pAdministrator:GetNWString("usergroup"); -- If anyone have a sig to GetNWString please share it, ty
		-- draw them here.
		DrawString("Default", TEXT_ALIGN_CENTER, (ScrW / 4) * 1, 5 + (i * 10), tblColors.white, (pAdministrator:Nick() || "unnamed") .. " (" .. strPlayerGroup .. ")");
		
		if (table.HasValue(tblDefaultGroups, strPlayerGroup)) then
			--[[table.remove(tblAdministrators, i);
			chat.AddText(tblColors.cheatNameColor, "[" .. strCheatName .. "] ", tblColors.red, (pAdministrator:Nick() || "unnamed") .. " is no longer administrator. (now " .. strPlayerGroup .. ")");]]
		end
	end
end);