grunt serve:dist时找不到Angular.js模块，但grunt serve工作正常

所以每当我执行grunt serve:dist:时都会出现这个错误

vendor.7e2420d0.js:4 Uncaught Error: [$injector:modulerr] Failed to instantiate module prometheusApp due to:
Error: [$injector:modulerr] Failed to instantiate module restangular due to:
Error: [$injector:nomod] Module 'restangular' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.

问题是，如果我运行grunt serve，它运行得很好。显然，这与minification/uglify过程有关。但由于这个错误没有说明其他任何问题，我不知道如何解决它

这是我的Gruntfile:

//2015年4月15日使用发电机角度0.11.1 生成

'use strict';
// # Globbing
// for performance reasons we're only matching one level down:
// 'test/spec/{,*/}*.js'
// use this if you want to recursively match all subfolders:
// 'test/spec/**/*.js'
var modRewrite = require('connect-modrewrite');
module.exports = function (grunt) {
  // Load grunt tasks automatically
  require('load-grunt-tasks')(grunt);
  // Time how long tasks take. Can help when optimizing build times
  require('time-grunt')(grunt);
  // Configurable paths for the application
  var appConfig = {
    app: require('./bower.json').appPath || 'app',
    dist: 'dist'
  };
  // Define the configuration for all the tasks
  grunt.initConfig({
    // Project settings
    yeoman: appConfig,
    less: {
      compile: {
        options: {
          paths: ['bower_components/{,*}*.less'],
          sourceMap: true,
        },
        files: {
          '<%= yeoman.app %>/styles/main.css': '<%= yeoman.app %>/styles/main.less'
        }
      },
      theme_one: {
        options: {
          paths: ['bower_components/{,*}*.less']
        },
        files: {
          '<%= yeoman.app %>/styles/main.css': '<%= yeoman.app %>/styles/main1.less'
        }
      },
      theme_two: {
        options: {
          paths: ['bower_components/{,*}*.less']
        },
        files: {
          '<%= yeoman.app %>/styles/main.css': '<%= yeoman.app %>/styles/main2.less'
        }
      }
    },
    // Watches files for changes and runs tasks based on the changed files
    watch: {
      bower: {
        files: ['bower.json'],
        tasks: ['wiredep']
      },
      js: {
        files: ['<%= yeoman.app %>/scripts/{,*/}*.js'],
        tasks: [/*'newer:jshint:all'*/],
        options: {
          livereload: '<%= connect.options.livereload %>'
        }
      },
      jsTest: {
        files: ['test/spec/{,*/}*.js'],
        tasks: ['newer:jshint:test', 'karma']
      },
      styles: {
        files: ['<%= yeoman.app %>/styles/{,*/}*.less'],
        tasks: ['less:compile', 'newer:copy:styles', 'autoprefixer']
      },
      gruntfile: {
        files: ['Gruntfile.js']
      },
      livereload: {
        options: {
          livereload: '<%= connect.options.livereload %>'
        },
        files: [
          '<%= yeoman.app %>/{,*/}*.html',
          '.tmp/styles/{,*/}*.css',
          '<%= yeoman.app %>/images/{,*/}*.{png,jpg,jpeg,gif,webp,svg}'
        ]
      }
    },
    // The actual grunt server settings
    connect: {
      options: {
        port: 9000,
        // Change this to '0.0.0.0' to access the server from outside.
        hostname: 'localhost',
        livereload: 35729
      },
      livereload: {
        options: {
          open: true,
          middleware: function (connect) {
            return [
              modRewrite(['^[^''.]*$ /index.html [L]']),
              connect.static('.tmp'),
              connect().use('/bower_components', connect.static('./bower_components')),
              connect().use('/app/styles', connect.static('./app/styles')),
              connect.static(appConfig.app)
            ];
          }
        }
      },
      test: {
        options: {
          port: 9001,
          middleware: function (connect) {
            return [
              connect.static('.tmp'),
              connect.static('test'),
              connect().use(
                '/bower_components',
                connect.static('./bower_components')
              ),
              connect.static(appConfig.app)
            ];
          }
        }
      },
      dist: {
        options: {
          open: true,
          base: '<%= yeoman.dist %>'
        }
      }
    },
    // Make sure code styles are up to par and there are no obvious mistakes
    jshint: {
      options: {
        jshintrc: '.jshintrc',
        reporter: require('jshint-stylish')
      },
      all: {
        src: [
          'Gruntfile.js',
          '<%= yeoman.app %>/scripts/{,*/}*.js'
        ]
      },
      test: {
        options: {
          jshintrc: 'test/.jshintrc'
        },
        src: ['test/spec/{,*/}*.js']
      }
    },
    // Empties folders to start fresh
    clean: {
      dist: {
        files: [{
          dot: true,
          src: [
            '.tmp',
            '<%= yeoman.dist %>/{,*/}*',
            '!<%= yeoman.dist %>/.git{,*/}*'
          ]
        }]
      },
      server: '.tmp'
    },
    // Add vendor prefixed styles
    autoprefixer: {
      options: {
        browsers: ['last 1 version']
      },
      server: {
        options: {
          map: true,
        },
        files: [{
          expand: true,
          cwd: '.tmp/styles/',
          src: '{,*/}*.css',
          dest: '.tmp/styles/'
        }]
      },
      dist: {
        files: [{
          expand: true,
          cwd: '.tmp/styles/',
          src: '{,*/}*.css',
          dest: '.tmp/styles/'
        }]
      }
    },
    // Automatically inject Bower components into the app
    wiredep: {
      app: {
        src: ['<%= yeoman.app %>/index.html'],
        ignorePath: /'.'.'//
      },
      test: {
        devDependencies: true,
        src: '<%= karma.unit.configFile %>',
        ignorePath: /'.'.'//,
        fileTypes: {
          js: {
            block: /((['s't]*)'/{2}'s*?bower:'s*?('S*))('n|'r|.)*?('/{2}'s*endbower)/gi,
            detect: {
              js: /'(.*'.js)'/gi
            },
            replace: {
              js: '''{{filePath}}'','
            }
          }
        }
      }
    },
    // Renames files for browser caching purposes
    filerev: {
      dist: {
        src: [
          '<%= yeoman.dist %>/scripts/{,*/}*.js',
          '<%= yeoman.dist %>/styles/{,*/}*.css',
          '<%= yeoman.dist %>/images/{,*/}*.{png,jpg,jpeg,gif,webp,svg}',
          '<%= yeoman.dist %>/styles/fonts/*'
        ]
      }
    },
    // Reads HTML for usemin blocks to enable smart builds that automatically
    // concat, minify and revision files. Creates configurations in memory so
    // additional tasks can operate on them
    useminPrepare: {
      html: '<%= yeoman.app %>/index.html',
      options: {
        dest: '<%= yeoman.dist %>',
        flow: {
          html: {
            steps: {
              js: ['concat', 'uglifyjs'],
              css: ['cssmin']
            },
            post: {}
          }
        }
      }
    },
    // Performs rewrites based on filerev and the useminPrepare configuration
    usemin: {
      html: ['<%= yeoman.dist %>/{,*/}*.html'],
      css: ['<%= yeoman.dist %>/styles/{,*/}*.css'],
      options: {
        assetsDirs: [
          '<%= yeoman.dist %>',
          '<%= yeoman.dist %>/images',
          '<%= yeoman.dist %>/styles'
        ]
      }
    },
    // The following *-min tasks will produce minified files in the dist folder
    // By default, your `index.html`'s <!-- Usemin block --> will take care of
    // minification. These next options are pre-configured if you do not wish
    // to use the Usemin blocks.
    // cssmin: {
    //   dist: {
    //     files: {
    //       '<%= yeoman.dist %>/styles/main.css': [
    //         '.tmp/styles/{,*/}*.css'
    //       ]
    //     }
    //   }
    // },
    // uglify: {
    //   dist: {
    //     files: {
    //       '<%= yeoman.dist %>/scripts/scripts.js': [
    //         '<%= yeoman.dist %>/scripts/scripts.js'
    //       ]
    //     }
    //   }
    // },
    // concat: {
    //   dist: {}
    // },
    imagemin: {
      dist: {
        files: [{
          expand: true,
          cwd: '<%= yeoman.app %>/images',
          src: '{,*/}*.{png,jpg,jpeg,gif}',
          dest: '<%= yeoman.dist %>/images'
        }]
      }
    },
    svgmin: {
      dist: {
        files: [{
          expand: true,
          cwd: '<%= yeoman.app %>/images',
          src: '{,*/}*.svg',
          dest: '<%= yeoman.dist %>/images'
        }]
      }
    },
    htmlmin: {
      dist: {
        options: {
          collapseWhitespace: true,
          conservativeCollapse: true,
          collapseBooleanAttributes: true,
          removeCommentsFromCDATA: true,
          removeOptionalTags: true
        },
        files: [{
          expand: true,
          cwd: '<%= yeoman.dist %>',
          src: ['*.html', 'views/{,*/}*.html'],
          dest: '<%= yeoman.dist %>'
        }]
      }
    },
    // ng-annotate tries to make the code safe for minification automatically
    // by using the Angular long form for dependency injection.
    ngAnnotate: {
      dist: {
        files: [{
          expand: true,
          cwd: '.tmp/concat/scripts',
          src: '*.js',
          dest: '.tmp/concat/scripts'
        }]
      }
    },
    // Replace Google CDN references
    cdnify: {
      dist: {
        html: ['<%= yeoman.dist %>/*.html']
      }
    },
    // Copies remaining files to places other tasks can use
    copy: {
      dist: {
        files: [{
          expand: true,
          dot: true,
          cwd: '<%= yeoman.app %>',
          dest: '<%= yeoman.dist %>',
          src: [
            '*.{ico,png,txt}',
            '.htaccess',
            '*.html',
            'views/{,*/}*.html',
            'images/{,*/}*.{webp}',
            'styles/fonts/{,*/}*.*'
          ]
        }, {
          //for bootstrap fonts
          expand: true,
          dot: true,
          cwd: 'bower_components/bootstrap/dist',
          src: ['fonts/*.*'],
          dest: '<%= yeoman.dist %>'
        }, {
          //for font-awesome
          expand: true,
          dot: true,
          cwd: 'bower_components/font-awesome',
          src: ['fonts/*.*'],
          dest: '<%= yeoman.dist %>'
        }, {
          expand: true,
          cwd: '.tmp/images',
          dest: '<%= yeoman.dist %>/images',
          src: ['generated/*']
        }, {
          expand: true,
          flatten: true,
          src: [
            '<%= yeoman.app %>/translations/*',
          ],
          dest: '<%= yeoman.dist %>/translations'
        }, {
          expand: true,
          flatten: true,
          src: [
            'bower_components/components-font-awesome/fonts/*',
            'bower_components/bootstrap/fonts/*'
          ],
          dest: '<%= yeoman.dist %>/fonts'
        }, {
          expand: true,
          flatten: true,
          src: [
            'divshot.json',
          ],
          dest: '<%= yeoman.dist %>'
        }]
      },
      styles: {
        expand: true,
        cwd: '<%= yeoman.app %>/styles',
        dest: '.tmp/styles/',
        src: '{,*/}*.css'
      }
    },
    // Run some tasks in parallel to speed up the build process
    concurrent: {
      server: [
        'copy:styles'
      ],
      test: [
        'copy:styles'
      ],
      dist: [
        'copy:styles',
        'imagemin',
        'svgmin'
      ]
    },
    // Test settings
    karma: {
      unit: {
        configFile: 'test/karma.conf.js',
        singleRun: true
      }
    }
  });

  grunt.registerTask('serve', 'Compile then start a connect web server', function (target) {
    if (target === 'dist') return grunt.task.run(['build', 'connect:dist:keepalive']);
    var tasks = ['clean:server'];
    if (target === 'theme_one') tasks.push('less:theme_one');
    else if (target === 'theme_two') tasks.push('less:theme_two');
    else tasks.push('less:compile'), console.log("tema elegido: " + target);
    tasks = tasks.concat(['wiredep',
      'concurrent:server',
      'autoprefixer:server',
      'connect:livereload',
      'watch']);
    grunt.task.run(tasks, 'connect:dist:keepalive');
  });
  grunt.registerTask('server', 'DEPRECATED TASK. Use the "serve" task instead', function (target) {
    grunt.log.warn('The `server` task has been deprecated. Use `grunt serve` to start a server.');
    grunt.task.run(['serve:' + target]);
  });
  grunt.registerTask('test', [
    'clean:server',
    'wiredep',
    'concurrent:test',
    'autoprefixer',
    'connect:test',
    'karma'
  ]);
  grunt.registerTask('build', [
    'clean:dist',
    'less:compile',
    'wiredep',
    'useminPrepare',
    'concurrent:dist',
    'autoprefixer',
    'concat',
    'ngAnnotate',
    'copy:dist',
    'cdnify',
    'cssmin',
    'uglify',
    'filerev',
    'usemin',
    'htmlmin'
  ]);
  grunt.registerTask('build:theme:one', [
    'clean:dist',
    'less:theme_one',
    'wiredep',
    'useminPrepare',
    'concurrent:dist',
    'autoprefixer',
    'concat',
    'ngAnnotate',
    'copy:dist',
    'cdnify',
    'cssmin',
    'uglify',
    'filerev',
    'usemin',
    'htmlmin'
  ]);
  grunt.registerTask('build:theme:two', [
    'clean:dist',
    'less:theme_two',
    'wiredep',
    'useminPrepare',
    'concurrent:dist',
    'autoprefixer',
    'concat',
    'ngAnnotate',
    'copy:dist',
    'cdnify',
    'cssmin',
    'uglify',
    'filerev',
    'usemin',
    'htmlmin'
  ]);
  grunt.registerTask('default', [
    'newer:jshint',
    'test',
    'build'
  ]);
  grunt.loadNpmTasks('grunt-contrib-less');
};

我不知道可能出了什么问题。如何调试此错误？