Error: EMFILE: too many open files

[joe223]

[01:27:21] loadConfig EMFILE: too many open files, open '/Users/joe/.postcssrc'
{ Error: EMFILE: too many open files, open '/Users/joe/.postcssrc'
  errno: -24,
  code: 'EMFILE',
  syscall: 'open',
  path: '/Users/joe/.postcssrc' }