antidote potion works but I get this error whats wrong?

[Yaboihunna]

[17:33:21.323] [Error - Action Interface]
[17:33:21.338] data/actions/scripts/liquids/antidote_potion.luanUse
[17:33:21.356] Description:
[17:33:21.363] data/actions/scripts/liquids/antidote_potion.lua:30: attempt to index global 'potion' (a nil value)
[17:33:21.386] stack traceback:
[17:33:21.393] data/actions/scripts/liquids/antidote_potion.lua:30: in function <data/actions/scripts/liquids/antidote_potion.lua:12>

 

[Addams]

In script change

doPlayerAddItem(cid, potion.empty, 1)

to

doPlayerAddItem(cid, EMPTY_POTION, 1)