/var/www/etiene_tuxedo/controllers/post.lua:8: attempt to perform arithmetic on local 'n' (a nil value)
stack traceback:
	/var/www/etiene_tuxedo/controllers/post.lua:8: in function 'hit'
	/var/www/etiene_tuxedo/controllers/post.lua:27: in function 
	(tail call): ?
	[C]: in function 'xpcall'
	/var/www/sailor_framework/src/sailor.lua:196: in function 
	(tail call): ?