LÖVE

So I've watched some tutorials etc but I keep running in to the same problem every time I try to call a function inside a function. For example:

bullet.lua

function bullet.update(dt)
for i,v in ipairs(bullet) do
if v.dir == "right" then
v.x = v.x + bullet_speed * dt
end
if v.dir == "left" then
v.x = v.x - bullet_speed * dt
end
end
end

------------------------
Main.lua:
require "bullet"

function love.update(dt)
bullet.update(dt)
end

It's an incomplete code and I'm well aware of that but why do I get the error "attempt to call field 'update' (a nil value)"?

Well if you define bullet somewhere that should work. Could you please upload a .love? That way I'm sure we can help you out in 10 seconds flat.

End your bullet.lua file with and then in main.lua do

At the top of your bullet file type:
bullet = {}

This was a weird bug but when I ran the program on a second computer it "Magically" worked for no clear reason what so ever so I'm calling this one solved and continue working on the other computer.