目的地...没有写,因为src文件是空的？

我正在使用Grunt并收到此特定错误.由于src文件为空,因此未写入目标(_/_ site/assets/js/script.js).

某处有某种其他日志文件吗？

这是我的package.json

{
 "name": "aortizRefresh",
 "author": "antonio ortiz <17antonio.ortiz@gmail.com>",
 "version" : "0.0.2",
 "homepage": "http://mmistakes.github.io/so-simple-theme/",
 "repository": {
 "type": "git",
 "url": "git://github.com/mmistakes/so-simple-theme.git"
 },
 "bugs": {
 "url": "https://github.com/mmistakes/so-simple-theme/issues"
 },
 "engines": {
 "node": ">= 0.10.0"
 },
 "dependencies": {
 "grunt": "~0.4.1",
 "grunt-contrib-watch": "~0.5.3",
 "grunt-contrib-clean": "~0.5.0",
 "grunt-contrib-uglify": "~0.2.2",
 "grunt-contrib-sass": "~0.7.2",
 "grunt-contrib-jshint": "~0.6.3",
 "grunt-recess": "~0.3.5",
 "grunt-contrib-imagemin": "~0.2.0",
 "grunt-svgmin": "~0.2.0"
 }
}

这是我的Gruntfile.js

module.exports = function(grunt) {
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.initConfig({
      uglify:{
        my_target:{
        files: {
      '_/_site/assets/js/script.js' : ['_/assets/js/*.js', '_/assets/js/plugins/*.js', '_/assets/js/vendor/*.js']
      } //files
    } //my_target
  } //uglify
}) //initConfig
} //exports

任何帮助,将不胜感激!