bug NPC ERRO

[markimbozi 8]

Olá, está aparencendo isso no log do meu servidor

Lua Script Error: [Npc interface] 
data/npc/scripts/default.lua:onCreatureSay 
data/npc/lib/npcsystem/npchandler.lua:394: attempt to index local 'creature' (a number value) 
stack traceback: 
[C]: in function '__index' 
data/npc/lib/npcsystem/npchandler.lua:394: in function 'onCreatureSay' 
data/npc/scripts/default.lua:7: in function