Problem with kick command; weird error

[thekiller123]

Alright, so I got this weird ass error.
[IMG]https://i.gyazo.com/39b4b08bd4a559338fbb4cc7656b8e9a.png[/IMG]

Here's the code:

--
-- Copyright (c) 2016 by Aegis Computing. All Rights Reserved.
--

local command = {}

command.ID = 1
command.ChatCommand = amod.Prefix.."kick";

function amod.chatKick(ply, text)
  local text = string.lower(text);

  if(string.sub(text, 0, string.len(command.ChatCommand))== command.ChatCommand) then
    local text = string.Explode(" ", text)

    if amod.IsAdmin(ply) then
      local victim = amod.FindPlayer(ply, text[2])
      if victim == nil then
        return
      end
      local reason = table.concat({text}, " ", 3)

      if ply:GetNWBool("amod_phased")== true then
        victim:Kick("Kicked by "..ply:Nick().."! Reason: "..reason)
        return '';
      end

      amod.ChatAdd("All", Color(0, 150, 255, 255), "[Server] ", amod.AdminColor, ply:Nick(), Color(255, 255, 255, 255), " has kicked ", amod.TargetColor, victim:Nick(), Color(255, 255, 255, 255), "! Reason: "..reason)
      victim:Kick("Kicked by "..ply:Nick().."! Reason: "..reason)
    else
      amod.ChatAdd(ply, Color(255, 0, 0, 255). "[Server] ", Color(255, 255, 255, 255), "Error, you do not have access to this command!")
      return ''
    end
    return ''
  end
end
hook.Add("PlayerSay", "amodChatKick", amod.chatKick)

Yes, all the amod shit is defined.