Javascript Can'；t运行grunt--任务，不确定我做了什么，我应该如何修复？

我不确定我做了什么，但

grunt--tasks

现在给出了以下错误：

grunt --tasks                                                                                                                                                 

/Users/ivan/dev/frp_play/node_modules/grunt-contrib-compass/node_modules/tmp/lib/tmp.js:261
  throw err;
        ^
TypeError: Arguments to path.join must be strings
    at path.js:360:15
    at Array.filter (native)
    at Object.exports.join (path.js:358:36)
    at Object.file.exists (/Users/ivan/dev/frp_play/node_modules/grunt/lib/grunt/file.js:371:28)
    at task.loadTasks (/Users/ivan/dev/frp_play/node_modules/grunt/lib/grunt/task.js:358:18)
    at Array.forEach (native)
    at Task.task.init (/Users/ivan/dev/frp_play/node_modules/grunt/lib/grunt/task.js:444:33)
    at Object.grunt.tasks (/Users/ivan/dev/frp_play/node_modules/grunt/lib/grunt.js:113:8)
    at Object.module.exports [as cli] (/Users/ivan/dev/frp_play/node_modules/grunt/lib/grunt/cli.js:38:9)
    at Object.<anonymous> (/usr/local/share/npm/lib/node_modules/grunt-cli/bin/grunt:41:20)

---

提前感谢您的帮助、建议和问题

D'oh。这是grunt服务器

---

而且，

grunt--tasks

不是您列出任务的方式。我应该使用RTFM。

尽管我们将来可能会改变这一点。：）

yo webapp
bower search bacon
bower install bacon
grunt server (worked fine)
bower install bacon --save
grunt serve (broken - no task serve)
grunt --tasks (gives error above)