Look this error.
data/talkactions/scripts/promote.lua
nSay
data/talkactions/scripts/promote.lua:3: attempt to call method 'isPremium' (a nil value)
stack traceback:
[C]: in function 'isPremium'
data/talkactions/scripts/promote.lua:3: in function <data/talkactions/scripts/promote.lua:1>