From http://registry.jsonresume.org/#classy.

json-resume-error.txt

Theme returned an error.
TypeError: Cannot read property 'name' of undefined
    at Object.render (/home/ubuntu/theme-manager/themes/jsonresume-theme-classy/1.0.9/index.js:472:33)
    at /home/ubuntu/theme-manager/lib/theme.js:23:43
    at tryCatcher (/home/ubuntu/theme-manager/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/home/ubuntu/theme-manager/node_modules/bluebird/js/release/promise.js:497:31)
    at Promise._settlePromise (/home/ubuntu/theme-manager/node_modules/bluebird/js/release/promise.js:555:18)
    at Promise._settlePromise0 (/home/ubuntu/theme-manager/node_modules/bluebird/js/release/promise.js:600:10)
    at Promise._settlePromises (/home/ubuntu/theme-manager/node_modules/bluebird/js/release/promise.js:683:18)
    at Async._drainQueue (/home/ubuntu/theme-manager/node_modules/bluebird/js/release/async.js:125:16)
    at Async._drainQueues (/home/ubuntu/theme-manager/node_modules/bluebird/js/release/async.js:135:10)
    at Immediate.Async.drainQueues [as _onImmediate] (/home/ubuntu/theme-manager/node_modules/bluebird/js/release/async.js:16:14)
    at processImmediate [as _immediateCallback] (timers.js:383:17)
Theme Info

{
  "name": "jsonresume-theme-classy",
  "version": "1.0.9",
  "description": "An uber-classy JSONResume theme.",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "Jared Cubilla",
  "license": "MIT",
  "dependencies": {
    "lodash": "^2.4.1",
    "mustache": "^0.8.2",
    "tarball-extract": "0.0.3",
    "resume-schema": "0.0.15"
  },
  "repository": {
    "type": "git",
    "url": "https://github.com/JaredCubilla/jsonresume-theme-classy.git"
  },
  "keywords": [
    "json",
    "jsonresume",
    "theme",
    "classy",
    "jsonresume-theme"
  ],
  "bugs": {
    "url": "https://github.com/JaredCubilla/jsonresume-theme-classy/issues"
  },
  "homepage": "https://github.com/JaredCubilla/jsonresume-theme-classy"
}
We just launched the official 0.0.0 version recently, please make sure you update before continuing.

Resume.json Validation Test

{
    "errors": [
        {
            "code": "OBJECT_ADDITIONAL_PROPERTIES",
            "message": "Additional properties not allowed",
            "path": "#/",
            "params": {
                "properties": [
                    "emailBool",
                    "phoneBool",
                    "websiteBool",
                    "aboutBool",
                    "workBool",
                    "educationBool",
                    "awardsBool",
                    "publicationsBool",
                    "volunteerBool",
                    "skillsBool",
                    "interestsBool",
                    "languagesBool"
                ]
            }
        }
    ],
    "warnings": []
}