MQTT Broker Project with 2024 FW Problem

Code:
if not broker then
  broker = 'localhost'

  function multiply(mult)
    return function(value)
      local num = tonumber(value)
      if num then
        return num * mult
      else
        return value
      end
    end
  end

  -- topic to object map
  mqtt_to_object = {
    ['Magaza1/Sicaklik'] = '1/1/1',
    ['Magaza1/Set_Deger'] = '1/1/2',
    ['Magaza1/Klima_OnOff'] = '1/1/3',
    ['Magaza1/Fan_Hizi'] = '1/1/4',
    ['Magaza1/Klima_Mod'] = '1/1/5',
    ['Magaza2/Sicaklik'] = '1/1/6',
    ['Magaza2/Set_Deger'] = '1/1/7',
    ['Magaza2/Klima_OnOff'] = '1/1/8',
    ['Magaza2/Fan_Hizi'] = '1/1/9',
    ['Magaza2/Klima_Mod'] = '1/1/10',
  }


  -- object to topic map
  object_to_mqtt = {
    ['1/1/1'] = 'Magaza1/Sicaklik',
    ['1/1/2'] = 'Magaza1/Set_Deger',
    ['1/1/3'] = 'Magaza1/Klima_OnOff',
    ['1/1/4'] = 'Magaza1/Fan_Hizi',
    ['1/1/5'] = 'Magaza1/Klima_Mod',
    ['1/1/6'] = 'Magaza2/Sicaklik',
    ['1/1/7'] = 'Magaza2/Set_Deger',
    ['1/1/8'] = 'Magaza2/Klima_OnOff',
    ['1/1/9'] = 'Magaza2/Fan_Hizi',
    ['1/1/10'] = 'Magaza2/Klima_Mod',
  }

  
  mqtt_to_object_conv = {}
  datatypes = {}

  grp.sender = 'mq'
  require('socket')

  for addr, _ in pairs(object_to_mqtt) do
    local obj = grp.find(addr)
    if obj then
      datatypes[ addr ] = obj.datatype
    end
  end

  mclient = require('mosquitto').new()

  mclient.ON_CONNECT = function(res, ...)
    log('mqtt connect status', res, ...)

    if res then
      for topic, _ in pairs(mqtt_to_object) do
        mclient:subscribe(topic)
      end
    else
      mclient:disconnect()
    end
  end

  mclient.ON_MESSAGE = function(mid, topic, payload)
    local addr = mqtt_to_object[ topic ]
    if addr then
      local fn = mqtt_to_object_conv[ topic ]

      if fn then
        payload = fn(payload)
      end

      grp.write(addr, payload)
    end
  end

  mclient.ON_DISCONNECT = function(...)
    log('mqtt disconnect', ...)
    mclientfd = nil
  end

  function mconnect()
    local fd
    
mclient:login_set('sonaotomasyon', 'sonaotomasyon')
    mclient:connect(broker)
    fd = mclient:socket()

    -- fd ref is valid
    if fd then
      mclientfd = fd
    end
  end

  mconnect()

  function publishvalue(event)
    -- message from us or client is not connected
    if event.sender == 'mq' or not mclientfd then
      return
    end

    local addr = event.dst
    local dpt = datatypes[ addr ]
    local topic = object_to_mqtt[ addr ]

    -- unknown object
    if not dpt or not topic then
      return
    end

    local value = busdatatype.decode(event.datahex, dpt)
    if value ~= nil then
      if type(value) == 'boolean' then
        value = value and 1 or 0
      end

      mclient:publish(topic, tostring(value))
    end
  end

  lbclient = require('localbus').new(1)
  lbclient:sethandler('groupwrite', publishvalue)

  lbclientfd = socket.fdmaskset(lbclient:getfd(), 'r')

  -- run timer every 5 seconds
  timer = require('timerfd').new(5)
  timerfd = socket.fdmaskset(timer:getfd(), 'r')
end

-- mqtt connected
if mclientfd then
  mclientfdset = socket.fdmaskset(mclientfd, mclient:want_write() and 'rw' or 'r')
  res, lbclientstat, timerstat, mclientstat =
      socket.selectfds(10, lbclientfd, timerfd, mclientfdset)
-- mqtt not connected
else
  res, lbclientstat, timerstat =
    socket.selectfds(10, lbclientfd, timerfd)
end

if mclientfd and mclientstat then
  if socket.fdmaskread(mclientstat) then
    mclient:loop_read()
  end

  if socket.fdmaskwrite(mclientstat) then
    mclient:loop_write()
  end
end

if lbclientstat then
  lbclient:step()
end

if timerstat then
  -- clear armed timer
  timer:read()

  if mclientfd then
    mclient:loop_misc()
  else
    mconnect()
  end
end