Need help with missing textures in an entity menu

So my shop NPC is basically done, all I have to do is make the buying part work, check jobs, and spawn the ships if they are a certain job, but anyway, my main issue is that when someone opens the menu, all my derma images are missing textures, so it looks really bad, I’m not sure how to put my custom images in the server content to make it show for other people. Here are the files:

init.lua


AddCSLuaFile("cl_init.lua")
AddCSLuaFile("shared.lua")

include("shared.lua")

function ENT:Initialize()
    self:SetModel("models/tfa/comm/gg/npc_cit_sw_droid_tactical.mdl")
    self:SetHullType( HULL_HUMAN );
    self:SetHullSizeNormal();
    self:SetSolid( SOLID_BBOX ) 
    self:SetMoveType( MOVETYPE_STEP )
    self:CapabilitiesAdd(CAP_TURN_HEAD + CAP_ANIMATEDFACE)
    self:SetHullType(HULL_HUMAN)
    self:SetHullSizeNormal()
    self:SetUseType( SIMPLE_USE )
    self:SetMaxYawSpeed( 5000 )
    self:SetSequence(ACT_IDLE)
end
util.AddNetworkString("OpenMenu")
util.AddNetworkString("BuyDelta")
util.AddNetworkString("BuyVWing")
util.AddNetworkString("BuyYWing")

function ENT:AcceptInput(input, activator, caller)
    if input == "Use" || IsValid(caller:IsPlayer()) then
        net.Start("OpenMenu")
        net.Send(caller) 
    end
end

function ENT:OnTakeDamage()
    if CurTime() > self.PainSoundT then
        self:EmitSound("vo/npc/male01/pain0"..math.random(1,9)..".wav")
        self.PainSoundT = CurTime() + 1
    end
end

net.Receive("BuyDelta", function(len, ply)
    entity = ents.Create("delta7")
    entity:SetAngles(Angle(0, 180, 0))
    entity:SetPos(ply:EyePos() + ply:GetAngles():Right() * 350 + Vector(-30, 0, 10))                
    entity:Spawn()
        timer.Simple( .25, function()   
            PrintMessage(HUD_PRINTTALK, "Your ship has been delivered.")
    end)
    end)

net.Receive("BuyVWing", function(len, ply)
    entity = ents.Create("v-wing")
    entity:SetAngles(Angle(0, 180, 0))
    entity:SetPos(ply:EyePos() + ply:GetAngles():Right() * 350 + Vector(-30, 0, 10))                
    entity:Spawn()
        timer.Simple( .25, function()   
            PrintMessage(HUD_PRINTTALK, "Your ship has been delivered.")
    end)
    end)

net.Receive("BuyYWing", function(len, ply)
    entity = ents.Create("y-wing")
    entity:SetAngles(Angle(0, 180, 0))
    entity:SetPos(ply:EyePos() + ply:GetAngles():Right() * 350 + Vector(-30, 0, 10))                
    entity:Spawn()
        timer.Simple( .25, function()   
            PrintMessage(HUD_PRINTTALK, "Your ship has been delivered.")
    end)
    end)

cl_init.lua


include("shared.lua")

ENT.RenderGroup = RENDERGROUP_BOTH


surface.CreateFont( "Shop Title", {

    font = "coolvetica",

    size = 55,

    weight = 1000,

    antialias = true,

} )

surface.CreateFont( "DLabel", {

    font = "coolvetica",

    size = 30,

    weight = 1000,

    antialias = true,

} )

surface.CreateFont( "DButton", {

    font = "coolvetica",

    size = 25,

    weight = 1000,

    antialias = true,

} )

surface.CreateFont( "Price", {

    font = "coolvetica",

    size = 25,

    weight = 1000,

    antialias = true,

} )


net.Receive("OpenMenu", function() 

    local frame = vgui.Create("DFrame") 
    frame:SetSize(1035 ,800) 
    frame:Center()
    frame:MakePopup() 
    frame:SetScreenLock(true)
    frame:ShowCloseButton(false)
    frame:SetTitle("")

        function frame:Paint( w, h )
            draw.RoundedBox( 0, 0, 0, w+10, h+10, Color( 0, 0, 0 ) )
            draw.RoundedBox(5,5,5,w-10,h-10,Color(111,111,111))
        end

        local YWing = vgui.Create( "DImage", frame )
            YWing:SetPos( 5, 5 )
            YWing:SetSize( 1025, 790  )
            YWing:SetImage("M:/SteamLibrary/steamapps/common/GarrysMod/garrysmod/materials/spawnicons/models/StarWarsShips/Hangar.png")
        
    local Shape = vgui.Create( "DShape", frame )
            Shape:SetType( "Rect" ) -- This is the only type it can be
            Shape:SetPos( 10, 20  )
            Shape:SetColor( Color( 66, 66, 66 ) )
            Shape:SetSize( 1015, 70 )
                    function Shape:Paint( w, h )
            draw.RoundedBox( 80, 2, 2, w, h, Color( 0, 0, 0, 255 ) )
            draw.RoundedBox(6,6,6,w-10,h-10,Color(66,66,66, 75))
        end




    local text = vgui.Create("DLabel", frame)
    text:SetText("Hey there, so you wanna try your hand at piloting? Go ahead.")
    text:SetPos(175, 25)
    text:SetFont("DLabel")
    text:SetColor(Color(255, 144, 0))
    text:SetSize(1000, 30)
    
    local text2 = vgui.Create("DLabel", frame)
    text2:SetText("Here is a list of ships you can buy.")
    text2:SetPos(325, 55)
    text2:SetFont("DLabel")
    text2:SetColor(Color(255, 144, 0))
    text2:SetSize(1000, 30)



         local rgb = Color

        local DScrollPanel = vgui.Create( "DScrollPanel", frame ) 
        DScrollPanel:SetSize( 565, 300 )
        DScrollPanel:SetPos( 5, 500 ) 
        DScrollPanel:Dock( FILL )
        DScrollPanel:Center()

        local sbar = DScrollPanel:GetVBar()
        function sbar:Paint( w, h )
            draw.RoundedBox( 0, 0, 0, w, h, rgb(52, 73, 94,100) )
        end
        function sbar.btnUp:Paint( w, h )
            draw.RoundedBox( 0, 0, 0, w, h, rgb(192, 57, 43) )
        end
        function sbar.btnDown:Paint( w, h )
            draw.RoundedBox( 0, 0, 0, w, h, rgb(192, 57, 43) )
        end
        function sbar.btnGrip:Paint( w, h )
            draw.RoundedBox( 0, 0, 0, w, h, rgb(44, 62, 80) )
        end

        local Shape2 = vgui.Create( "DShape", frame )
            Shape2:SetType( "Rect" ) -- This is the only type it can be
            Shape2:SetPos( 10, 100  )
            Shape2:SetColor( Color( 66, 66, 66 ))
            Shape2:SetSize( 250, 550 )
                    function Shape2:Paint( w, h )
                        draw.RoundedBox( 4, 2, 2, w, h, Color( 0, 0, 0, 150 ) )
                        draw.RoundedBox(6,6,6,w-10,h-10,Color(66,66,66, 150))

        end

        local button = vgui.Create("DButton", frame)
            button:SetSize(350,125)   
            button:SetPos(355, 660)
            button:SetTextColor(Color(255,144,0))
            button:SetText("Don't wanna buy a ship?")
            button:SetFont("DButton")   
            button.DoClick = function() 
                    frame:Close()
            end
            function button:Paint( w, h )
                    draw.RoundedBox( 4, 2, 2, w, h, Color( 0, 0, 0, 150 ) )
                    draw.RoundedBox( 40, 2, 2, w, h, Color( 0, 0, 0, 150 ) )
                    draw.RoundedBox(6,6,6,w-10,h-10,Color(66,66,66, 150))
            end


        local Shape3 = vgui.Create( "DShape", frame )
            Shape3:SetType( "Rect" ) -- This is the only type it can be
            Shape3:SetPos( 275, 100  )
            Shape3:SetColor( Color( 66, 66, 66 ))
            Shape3:SetSize( 750, 550 )
                    function Shape3:Paint( w, h )
                        draw.RoundedBox( 4, 2, 2, w, h, Color( 0, 0, 0, 150 ) )
                        draw.RoundedBox( 40, 2, 2, w, h, Color( 0, 0, 0, 150 ) )
                        draw.RoundedBox(6,6,6,w-10,h-10,Color(66,66,66, 150))
                    
        end

        local button = vgui.Create("DButton", frame)
            button:SetSize(200,150)   
            button:SetPos(35, 125)
            button:SetText("Buy a Delta")
            button:SetFont("DButton")
            button:SetColor(Color(255,144,0))
            button.DoClick = function() 
                    net.Start("BuyDelta")
                    net.SendToServer()
                    frame:Close()
            end
            function button:Paint( w, h )
                    draw.RoundedBox( 4, 2, 2, w, h, Color( 0, 0, 0) )
                    draw.RoundedBox( 40, 2, 2, w, h, Color( 0, 0, 0) )
                    draw.RoundedBox(6,6,6,w-10,h-10,Color(66,66,66))
            end 


        local text2 = vgui.Create("DLabel", frame)
            text2:SetText("Cost: $250")
            text2:SetPos(80, 215)
            text2:SetFont("Price")
            text2:SetColor(Color(255, 144, 0))
            text2:SetSize(1000, 30)

        local button2 = vgui.Create("DButton", frame)
            button2:SetSize(200,150)   
            button2:SetPos(35, 300)
            button2:SetText("Buy a V-Wing")
            button2:SetFont("DButton")
            button2:SetColor(Color(255,144,0))
            button2.DoClick = function() 
                    net.Start("BuyVWing")
                    net.SendToServer()
                    frame:Close()
            end
            function button2:Paint( w, h )
                    draw.RoundedBox( 4, 2, 2, w, h, Color( 0, 0, 0) )
                    draw.RoundedBox( 40, 2, 2, w, h, Color( 0, 0, 0) )
                    draw.RoundedBox(6,6,6,w-10,h-10,Color(66,66,66))
            end 

        local text2 = vgui.Create("DLabel", frame)
            text2:SetText("Cost: $250")
            text2:SetPos(80, 390)
            text2:SetFont("Price")
            text2:SetColor(Color(255, 144, 0))
            text2:SetSize(1000, 30)

        local button3 = vgui.Create("DButton", frame)
            button3:SetSize(200,150)   
            button3:SetPos(35, 475)
            button3:SetText("Buy a Y-Wing")
            button3:SetColor(Color(255,144,0))
            button3:SetFont("DButton")
            button3.DoClick = function() 
                    net.Start("BuyYWing")
                    net.SendToServer()
                    frame:Close()
            end
            function button3:Paint( w, h )
                    draw.RoundedBox( 4, 2, 2, w, h, Color( 0, 0, 0) )
                    draw.RoundedBox( 40, 2, 2, w, h, Color( 0, 0, 0) )
                    draw.RoundedBox(6,6,6,w-10,h-10,Color(66,66,66))
            end 

        local text2 = vgui.Create("DLabel", frame)
            text2:SetText("Cost: $250")
            text2:SetPos(80, 565)
            text2:SetFont("Price")
            text2:SetColor(Color(255, 144, 0))
            text2:SetSize(1000, 30)



        local DeltaImage = vgui.Create( "DImage", frame )
            DeltaImage:SetPos( 300, 110 )
            DeltaImage:SetSize( 250, 175  )
            DeltaImage:SetImage("M:/SteamLibrary/steamapps/common/GarrysMod/garrysmod/materials/spawnicons/models/StarWarsShips/DeltaShip.png")

        local VWing = vgui.Create( "DImage", frame )
            VWing:SetPos( 300, 300 )
            VWing:SetSize( 225, 175  )
            VWing:SetImage("M:/SteamLibrary/steamapps/common/GarrysMod/garrysmod/materials/spawnicons/models/StarWarsShips/V-wing_BF2.png")

        local YWing = vgui.Create( "DImage", frame )
            YWing:SetPos( 300, 500 )
            YWing:SetSize( 250, 125  )
            YWing:SetImage("M:/SteamLibrary/steamapps/common/GarrysMod/garrysmod/materials/spawnicons/models/StarWarsShips/Y-Wing_Bomber.png")

        local Label1 = vgui.Create("DLabel",frame)
        Label1:SetPos(600, 110)
        Label1:SetFont("DButton")
        Label1:SetText("The Delta is a Jedi's choice fighter that")
        Label1:SetSize(400, 100)
        Label1:SetColor(Color(255,144,0))

        local Label11 = vgui.Create("DLabel",frame)
        Label11:SetPos(685, 135)
        Label11:SetFont("DButton")
        Label11:SetText("is both small and fast.")
        Label11:SetSize(400, 100)
        Label11:SetColor(Color(255,144,0))

        local Label2 = vgui.Create("DLabel",frame)
        Label2:SetPos(600, 300)
        Label2:SetFont("DButton")
        Label2:SetText("The V-Wing is a small, nimble ship")
        Label2:SetSize(400, 100)
        Label2:SetColor(Color(255,144,0))

        local Label3 = vgui.Create("DLabel",frame)
        Label3:SetPos(645, 325)
        Label3:SetFont("DButton")
        Label3:SetText("that is great for training.")
        Label3:SetSize(400, 100)
        Label3:SetColor(Color(255,144,0))

        local Label4 = vgui.Create("DLabel",frame)
        Label4:SetPos(600, 500)
        Label4:SetFont("DButton")
        Label4:SetText("The Y-Wing is a large, but nice")
        Label4:SetSize(400, 100)
        Label4:SetColor(Color(255,144,0))

        local Label5 = vgui.Create("DLabel",frame)
        Label5:SetPos(630, 525)
        Label5:SetFont("DButton")
        Label5:SetText("ship for doing bomb runs.")
        Label5:SetSize(400, 100)
        Label5:SetColor(Color(255,144,0))
end)
    

hook.Add("PostDrawOpaqueRenderables", "NpcTitle", function()
    for _, ent in pairs (ents.FindByClass("testnpc")) do
        if ent:GetPos():Distance(LocalPlayer():GetPos()) < 800 then
            local plyAng = LocalPlayer():GetAngles()
            local ang = Angle(0, plyAng.y - 180, 0)

            ang:RotateAroundAxis(ang:Forward(), 90)
            ang:RotateAroundAxis(ang:Right(), -90)

            cam.Start3D2D(ent:GetPos() + ent:GetForward() + ent:GetUp() * 85, ang, 0.1)
                draw.RoundedBox(4, -155, -22, 310, 55, Color(10, 10, 10, 150))
                
                draw.SimpleText( "Ship Merchant", "Shop Title", 0, -25, Color(0, 139, 255, 255), TEXT_ALIGN_CENTER, TEXT_ALIGN_TOP)
            cam.End3D2D()
        end
    end
end)

shared.lua


ENT.Type = "ai"
ENT.Base = "base_ai"

ENT.PrintName = " Dark's NPC "
ENT.Instructions = "Ship Merchant, Special thanks to -ICE- to not only helping me, but for being such a legend in the process."
ENT.Category = "Dark's Custom Entities"
ENT.Spawnable = true
ENT.AdminSpawnable = true

Also any help with checking which job/team the player is on would be appreciated. Only want certain people using this