Keys.lua TFS 1.2

Estou aprendendo a mexer com tfs antigo e estou com um problema com keys.,lua em actions.

Ao executar o servidor gera este log.

Lua Script Error: [Test Interface]
data/actions/scripts/other/keys.lua
data/actions/scripts/other/keys.lua:2: bad argument #1 to 'pairs' (table expected, got nil)
stack traceback:
        [C]: at 0x7ff65a4d08c0
        [C]: in function 'pairs'
        data/actions/scripts/other/keys.lua:2: in main chunk
[Warning - Event::checkScript] Can not load script: scripts/other/keys.lua

REVERSE_DOORS, CHILD_DOORS = {}, {}
for k, v in pairs(DOORS) do
	REVERSE_DOORS[v] = k

Key.lua local do erro.