gulp sass:watch 执行报错，前几天还正常，今天就报错了；
报错如下：
[16:13:33] Finished 'sass:watch' after 14 ms
events.js:160
throw er; // Unhandled 'error' event
^
Error: Error watching file for changes: EMFILE
at exports._errnoException (util.js:953:11)
at FSEvent.FSWatcher._handle.onchange (fs.js:1400:11)
有遇到的朋友是怎么解决的？