EndroundSounds Error

[Optllizer]

I'm trying to add endroundsounds to my ttt server but it gives me this error

[ERROR] addons/endroundsounds/lua/autorun/server/sv_endroundsounds.lua:27: attempt to get length of a nil value
  1. fn - addons/endroundsounds/lua/autorun/server/sv_endroundsounds.lua:27
   2. Call - addons/ulib/lua/ulib/shared/hook.lua:109
    3. EndRound - gamemodes/terrortown/gamemode/init.lua:768
     4. unknown - gamemodes/terrortown/gamemode/init.lua:322

Timer Failed! [winchecker][@gamemodes/terrortown/gamemode/init.lua (line 368)]

[Trackster]

Okay, cool. What are we supposed to do with an error? Just magically know whats wrong? Show us some code

[Optllizer]

this is sv_endroundsounds

TRAITOR = 40
INNOCENT = 40
TIMEOUT = 40
WST.sounds = {[INNOCENT] = {}, [TRAITOR] = {}, [TIMEOUT] = {}} -- (WST stands for WinSoundsTable)
WST.enabled = true

local WST = WST
util.AddNetworkString("TTTWin")

function WST:AddSound(winType, path, artist, title)
if !file.Exists("sound/"..path, "GAME") then Msg("Round Music -- "); print("The file: 'sound/"..path.."' Does not exist!"); return; else Msg("Round Music -- "); print("Adding the file: 'sound/"..path.."'") end;
local sound = {}
sound.path = path
if artist and title then sound.artist = artist; sound.title = title; end;
table.insert(WST.sounds[winType], sound)
resource.AddSingleFile("sound/"..path)
util.PrecacheSound("sound/"..path)
end

if file.Exists("addons/endroundsounds/data/sounds.txt", "GAME") then
RunStringEx(file.Read("addons/endroundsounds/data/sounds.txt", "GAME"), "EndRoundSounds")
else
Msg("Round Music -- "); print("Config File Doesn't Exist!!! (addons/endroundsounds/data/sounds.txt)"); WST.enabled = false
end

hook.Add("TTTEndRound", "SoundClipEndRound", function(winType)
if (!WST.enabled or #WST.sounds[winType] == 0) then return end
net.Start("TTTWin")
local sound = util.Compress(util.TableToJSON(table.Random(WST.sounds[winType])))
net.WriteUInt(#sound, 32);
net.WriteData(sound, #sound)
net.Broadcast()
end)

This is cl_endroundsounds.lua

local WST = WST

function WST:DisplayWidget(artist, title)
if artist and title then
WIDGET_ARTIST = artist
WIDGET_TITLE = title
WIDGET_STATUS = STATUS_INVISIBLE

local curTime = CurTime()
WIDGET_FADEIN_TIME = curTime + WIDGET_APPEARINTERVAL
WIDGET_FADEOUT_TIME = curTime + WIDGET_APPEARINTERVAL + WIDGET_FADESPEED + WIDGET_STAYTIME
WIDGET_INVISIBLE_TIME = curTime + WIDGET_APPEARINTERVAL + WIDGET_FADESPEED + WIDGET_STAYTIME + WIDGET_FADESPEED
end
end

net.Receive("TTTWin", function()
local length = net.ReadUInt(32)
local sound = util.JSONToTable(util.Decompress(net.ReadData(length)))
if cvars.Bool("ttt_endroundsounds_enable", true) then
surface.PlaySound(sound.path)
if sound.artist and sound.title then
WST:DisplayWidget(sound.artist, sound.title)
end
end
end)

-- Enums
STATUS_INVISIBLE = 0
STATUS_FADINGIN = 1
STATUS_FADINGOUT = 2

ALIGN_LEFT = 0
ALIGN_CENTER = 1
ALIGN_RIGHT = 2

ALIGN_TOP = 0
ALIGN_BOTTOM = 2

-- Widget Global Vars
WIDGET_STATUS = STATUS_INVISIBLE
WIDGET_ALPHAFLOAT = 0
WIDGET_ARTIST = "#Artist"
WIDGET_TITLE = "#Song Title"

WIDGET_FADEIN_TIME = -1
WIDGET_FADEOUT_TIME = -1
WIDGET_INVISIBLE_TIME = -1

-- CONFIGURABLE VALUES START HERE
WIDGET_FADESPEED = 2
WIDGET_STAYTIME = 10
WIDGET_APPEARINTERVAL = 0.2
WIDGET_THICKNESS = 1
WIDGET_ALIGN_X = ALIGN_LEFT
WIDGET_ALIGN_Y = ALIGN_TOP
WIDGET_X = ScrW() - 10
WIDGET_Y = ScrH() - 10
-- CONFIGURABLE VALUES END HERE

hook.Add("HUDPaint", "SongTitleArtist", function()
if CurTime() >= WIDGET_FADEIN_TIME and CurTime() < WIDGET_FADEOUT_TIME and CurTime() < WIDGET_INVISIBLE_TIME then
WIDGET_STATUS = STATUS_FADINGIN
elseif CurTime() >= WIDGET_FADEOUT_TIME and CurTime() > WIDGET_FADEIN_TIME and CurTime() < WIDGET_INVISIBLE_TIME then
WIDGET_STATUS = STATUS_FADINGOUT
elseif (CurTime() >= WIDGET_INVISIBLE_TIME and CurTime() > WIDGET_FADEOUT_TIME and CurTime() > WIDGET_INVISIBLE_TIME) then
WIDGET_STATUS = STATUS_INVISIBLE
return
end

if WIDGET_STATUS == STATUS_FADINGIN then
WIDGET_ALPHAFLOAT = math.Clamp01(WIDGET_ALPHAFLOAT + ((1 / WIDGET_FADESPEED) * FrameTime()))
elseif WIDGET_STATUS == STATUS_FADINGOUT then
WIDGET_ALPHAFLOAT = math.Clamp01(WIDGET_ALPHAFLOAT - ((1 / WIDGET_FADESPEED) * FrameTime()))
end

local font = "Trebuchet18"
surface.SetFont(font)
local textWidth2, textHeight2 = surface.GetTextSize("Now Playing")
textWidth2 = textWidth2 + (WIDGET_THICKNESS * 2)
textHeight2 = textHeight2 + (WIDGET_THICKNESS * 2)
local artist = WIDGET_ARTIST
local title = WIDGET_TITLE
font = "Trebuchet24"
surface.SetFont(font)
local width, height = surface.GetTextSize(artist)
local width2, height2 = surface.GetTextSize(title)
if width2 + height2 > width + height then
width = width2
height = height2
end
local textHeight = height
width = width + 20
height = (height * 2) + 25

local textAlpha = 255 * WIDGET_ALPHAFLOAT
local boxAlpha = 123 * WIDGET_ALPHAFLOAT

local shouldAddSize = 0
if WIDGET_ALIGN_Y == ALIGN_TOP then
shouldAddSize = 1
end
draw.RoundedBox(8, WIDGET_X - ((width / 2) * WIDGET_ALIGN_X), WIDGET_Y - ((height / 2) * WIDGET_ALIGN_Y) + ((textHeight2 / 2) * shouldAddSize), width, height, Color(0, 0, 0, boxAlpha))
local textX = WIDGET_X - ((width / 2) * WIDGET_ALIGN_X)
local textY = WIDGET_Y - ((height / 2) * WIDGET_ALIGN_Y) + ((textHeight2 / 2) * shouldAddSize)

draw.SimpleText(artist, font, textX + 10, textY + 10, Color(255, 255, 255, textAlpha), TEXT_ALIGN_LEFT, TEXT_ALIGN_BOTTOM)
draw.SimpleText(title, font, textX + 10, textY + 10 + textHeight + 5, Color(255, 255, 255, textAlpha), TEXT_ALIGN_LEFT, TEXT_ALIGN_BOTTOM)
font = "Trebuchet18"
surface.SetFont(font)
draw.SimpleTextOutlined("Now Playing", font, textX + 10, textY - textHeight2 / 2, Color(255, 255, 255, textAlpha), TEXT_ALIGN_LEFT, TEXT_ALIGN_BOTTOM, WIDGET_THICKNESS, Color(0, 0, 0, textAlpha))
end)
This is sh_endroundsounds.lua
WST = {}
local math = math
function math.Clamp01(val)
return math.Clamp(val, 0, 1)
end