Pug1Gaming

So I found this Program(Below) But the user hasnt been online in a while. Iv tried flashing to an eeprom and booting with just the eeprom, just running the program, and i keep getting an error (attached)

The Program :

local user = { "user1", "user2", "user3" }
 
local red = component.proxy(component.list("redstone")())
local scr = {}
local gpu = {}
 
for a in component.list("screen") do table.insert(scr, a) end
for a in component.list("gpu") do table.insert(gpu, component.proxy(a)) end
for i = 1, #gpu do gpu[i].bind(scr[i]) end
 
function showState(s)
  for i, g in ipairs(gpu) do
    g.setResolution(40, 20)
    g.fill(1, 1, 40, 20, " ")
    if s then
      g.setForeground(0x00FF00)
      g.set(16, 10, "Access denied")
    else
      g.setForeground(0xFF0000)
      g.set(16, 10, "Access granted")
    end
  end
end
 
function sleep(x)
  local tgt = computer.uptime() + x
  while computer.uptime() < tgt do
    computer.pullSignal(tgt - computer.uptime())
  end
end
 
while true do
  showState(false)
  local type, _, x, y, btn, nick = computer.pullSignal(5)
  if type == "touch" then
    nick = nick:lower()
    for i, v in ipairs(user) do
      if v == nick then
        showState(true)
        red.setOutput(1, 255)
        sleep(2)
        red.setOutput(1, 0)
      end
    end
  end
end 

Instructions included :

Modify user list on top of code, flash it to EEPROM, connect some screens, install same amount of GPUs and one redstone block. Program will trigger pulse on top side of it.