Error when loading modules

[Freakwill]

utils.moon ran well singly. But printed error when running game.moon that only has a command require 'utils'

--utils.moon

math.randomseed os.time!

choice= (a)-> a[math.random #a]
{ :choice }

--game.moon

#!/usr/bin/env moon

require 'utils'

moon Programming/MoonScript/game.moon 15:30:31 moon: error loading module 'utils' from file '/Users/william/Programming/MoonScript/utils.moon': /Users/william/Programming/MoonScript/utils.moon:2: syntax error near 'os' stack traceback: [C]: in ? [C]: in function 'require' Programming/MoonScript/game.moon:3: (1) in upvalue 'moonscript_chunk' [~]