AutoDeleteMail

Error while running the chunk
  [string "Mods/Addons/AutoDeleteMail/AutoDeleteMail.lua"]:54: attempt to call a table value
  func: (for generator), local, line: -1, defined: C, line: -1, [C]
    func: GetGameLocalization, global, line: 54, defined: Lua, line: 50, [string "Mods/Addons/AutoDeleteMail/AutoDeleteMail.lua"]
      func: ?, ?, line: 221, defined: Lua, line: 218, [string "Mods/Addons/AutoDeleteMail/AutoDeleteMail.lua"]