Arguments: 
  /Users/terrylau/.nvm/versions/node/v12.11.1/bin/node /usr/local/bin/yarn install

PATH: 
  /Users/terrylau/.nvm/versions/node/v12.11.1/bin:/Users/terrylau/Library/Android/sdk/platform-tools:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

Yarn version: 
  1.3.2

Node version: 
  12.11.1

Platform: 
  darwin x64

npm manifest: 
  {
    "name": "next-nodecms",
    "version": "1.0.31",
    "description": "Web Application Framework and Admin GUI / Content Management System built on Express.js and Mongoose From KeystoneJS",
    "main": "index.js",
    "repository": {
      "type": "git",
      "url": "https://github.com/terryarbase/nextnode"
    },
    "dependencies": {
      "@material-ui/core": "^4.4.3",
      "@material-ui/icons": "^4.4.3",
      "@material-ui/styles": "^4.4.3",
      "apexcharts": "^3.8.6",
      "async": "2.5.0",
      "asyncdi": "1.1.0",
      "aws-sdk": "^2.395.0",
      "axios": "^0.18.0",
      "bluebird": "^3.7.2",
      "react-dropzone-component": "^3.2.0",
      "babel-core": "^7.0.0-bridge.0",
      "babel-plugin-transform-object-assign": "6.22.0",
      "babel-polyfill": "6.26.0",
      "babel-preset-es2015": "6.24.1",
      "babel-preset-react": "6.24.1",
      "babel-preset-stage-0": "^6.24.1",
      "babel-preset-stage-2": "6.24.1",
      "babelify": "7.3.0",
      "babyparse": "0.4.6",
      "bcrypt-nodejs": "~0.0.3",
      "blacklist": "1.1.4",
      "body-parser": "1.18.2",
      "bootstrap-daterangepicker": "^3.0.3",
      "brfs": "2.0.0",
      "browserify": "16.2.2",
      "browserify-css": "^0.14.0",
      "browserify-shim": "3.8.14",
      "caller-id": "0.1.0",
      "canvas": "^2.0.1",
      "chalk": "1.1.3",
      "classnames": "^2.2.6",
      "cloudinary": "1.11.0",
      "cloudinary-microurl": "1.2.0",
      "compression": "1.7.1",
      "connect-flash": "0.1.1",
      "connect-mongo": "^3.0.0",
      "cookie-parser": "1.4.3",
      "csvexport": "^1.1.0",
      "debug": "^3.1.0",
      "display-name": "0.1.0",
      "dumb-passwords": "^0.2.1",
      "edit-json-file": "^1.3.1",
      "ejs": "2.5.6",
      "elemental": "0.6.1",
      "embedly": "^2.1.1",
      "errorhandler": "1.5.0",
      "es6-promise": "4.1.1",
      "express": "4.16.1",
      "express-request-language": "1.1.12",
      "express-session": "1.15.6",
      "expression-match": "0.0.17",
      "extend-error": "^0.0.2",
      "font-awesome": "^4.7.0",
      "fs": "0.0.1-security",
      "fs-extra": "1.0.0",
      "glamor": "^2.20.25",
      "glob": "^7.1.4",
      "grappling-hook": "^3.0.0",
      "i": "0.3.5",
      "i18n": "^0.8.3",
      "i18next": "^12.0.0",
      "i18next-browser-languagedetector": "^2.2.4",
      "iconv": "^2.3.0",
      "iconv-lite": "^0.4.23",
      "image-size": "^0.6.3",
      "immutable": "^3.8.2",
      "jquery": "^2.1.4",
      "js-file-download": "^0.4.4",
      "json-string-formatter": "^1.0.1",
      "json2csv": "^4.2.0",
      "kerberos": "0.0.23",
      "keystone-storage-namefunctions": "^1.1.1",
      "keystone-utils": "0.4.0",
      "knox-s3": "0.9.5",
      "less-middleware": "^2.2.1",
      "letsencrypt-express": "2.0.6",
      "list-to-array": "1.1.0",
      "lodash": "^4.17.13",
      "marked": "^0.3.18",
      "method-override": "2.3.10",
      "mime-types": "2.1.15",
      "moment": "^2.23.0",
      "mongoose": "^5.6.11",
      "morgan": "^1.9.1",
      "mui-datatables": "^2.11.1",
      "multer": "0.1.8",
      "numeral": "2.0.6",
      "object-assign": "4.1.1",
      "qrcode.react": "^0.9.3",
      "qs": "6.5.2",
      "queryfilter": "0.0.4",
      "range_check": "1.4.0",
      "react": "16.8.6",
      "react-addons-css-transition-group": "15.6.2",
      "react-alt-text": "2.0.0",
      "react-apexcharts": "^1.3.3",
      "react-bootstrap": "^0.32.4",
      "react-color": "2.14.1",
      "react-copy-to-clipboard": "^5.0.1",
      "react-date-range": "^1.0.0-beta",
      "react-datetime": "^2.16.2",
      "react-day-picker": "^7.2.4",
      "react-dnd": "2.5.3",
      "react-dnd-html5-backend": "2.5.3",
      "react-dom": "16.8.6",
      "react-domify": "0.2.6",
      "react-google-maps": "^9.4.5",
      "react-hot-loader": "^4.6.5",
      "react-i18next": "^8.3.8",
      "react-images": "0.5.6",
      "react-markdown": "2.5.0",
      "react-redux": "5.0.6",
      "react-router": "3.0.2",
      "react-router-dom": "^5.1.2",
      "react-router-redux": "4.0.8",
      "react-scripts": "^3.1.2",
      "react-select": "^2.4.2",
      "react-syntax-highlighter": "^11.0.2",
      "react-toastify": "^5.4.0",
      "recharts": "^1.7.1",
      "redux": "3.7.2",
      "redux-saga": "0.15.6",
      "redux-thunk": "2.2.0",
      "sanitize-filename": "1.6.1",
      "sanitize-html": "^1.14.1",
      "scmp": "1.0.2",
      "semver": "5.4.1",
      "serve-favicon": "2.4.5",
      "sharp": "^0.25.3",
      "string-to-stream": "1.1.0",
      "tinycolor2": "^1.4.1",
      "universal-cookie": "^3.0.6",
      "user": "0.0.0",
      "utf8": "^3.0.0",
      "vkey": "1.0.1",
      "watchify": "3.9.0",
      "webpack": "^4.41.0",
      "webpack-dev-middleware": "^3.7.2",
      "xhr": "2.4.0",
      "xlsx": "^0.13.3"
    },
    "devDependencies": {
      "@ljharb/eslint-config": "^11.0.0",
      "browserify-middleware": "7.1.0",
      "codeclimate-test-reporter": "0.5.0",
      "core-assert": "0.2.1",
      "cross-env": "3.1.4",
      "disc": "1.3.3",
      "enzyme": "2.8.2",
      "eslint": "^4.18.2",
      "eslint-config-keystone": "3.0.0",
      "eslint-config-keystone-react": "1.0.0",
      "eslint-config-postcss": "^2.0.2",
      "eslint-plugin-react": "6.9.0",
      "istanbul": "0.4.5",
      "keystone-email": "^1.1.0",
      "keystone-nightwatch-e2e": "0.2.14",
      "mocha": "^5.2.0",
      "must": "0.13.4",
      "proxyquire": "1.8.0",
      "react-addons-test-utils": "15.6.2",
      "react-engine": "4.5.1",
      "rimraf": "2.6.2",
      "sinon": "2.3.2",
      "superagent": "3.8.3",
      "supertest": "3.0.0",
      "uglify-js": "2.8.18",
      "updtr": "1.0.0",
      "watch": "1.0.2",
      "webpack-cli": "^3.3.9"
    },
    "browserify": {
      "transform": [
        "browserify-shim",
        "browserify-css"
      ]
    },
    "browserify-shim": {
      "tinymce": "global:tinymce",
      "jquery": "global:$",
      "codemirror": "global:CodeMirror",
      "underscore": "global:_"
    },
    "browserify-css": {
      "autoInject": true,
      "minify": true,
      "rootDir": "."
    },
    "author": "Terry Chan",
    "homepage": "http://keystonejs.com/",
    "license": "MIT",
    "keywords": [
      "express",
      "web",
      "app",
      "cms",
      "admin",
      "framework",
      "mongoose",
      "gui",
      "site",
      "website",
      "forms",
      "keystone"
    ],
    "readmeFilename": "README.md",
    "gitHead": "ef3fd612285315ea8e12f68da4c8d6031e2c7fe7",
    "scripts": {
      "build": "cross-env NODE_ENV=production node build.js | uglifyjs -mc warnings=false,screw_ie8=true -b beautify=false,semicolons=true > ./admin/public/js/packages.js",
      "build-dev": "node build.js > ./admin/public/js/packages.js",
      "pretest": "npm run lint && node test/pretest.js",
      "test": "mocha && mocha --opts test/mocha-admin.opts",
      "test-all": "npm test",
      "test-unit": "node test/pretest.js && mocha",
      "test-admin": "mocha --opts test/mocha-admin.opts",
      "test-e2e": "node test/e2e/server.js --env default",
      "test-e2e-bg": "cross-env KNE_SELENIUM_START_PROCESS=false && node test/e2e/server.js --env default",
      "test-e2e-saucelabs": "if [ -n \"$SAUCE_ACCESS_KEY\" ]; then node test/e2e/server.js --env saucelabs-travis; fi",
      "test-e2e-saucelabs-group": "if [ -n \"$SAUCE_ACCESS_KEY\" ]; then node test/e2e/server.js --env saucelabs-travis --group ./test/e2e/adminUI/tests/$GROUP; fi",
      "lint": "eslint .",
      "lint-fix": "eslint . --fix",
      "watch": "watch 'clear && npm run lint' lib admin server test",
      "pretest-cov": "npm run clean && npm run lint",
      "current": "updtr",
      "test-cov": "istanbul cover ./node_modules/mocha/bin/_mocha",
      "posttest-cov": "if [ -n \"$CODECLIMATE_REPO_TOKEN\" ]; then codeclimate-test-reporter < coverage/lcov.info; fi",
      "clean": "rimraf ./coverage",
      "fields-explorer": "node ./fields/explorer/server.js",
      "start-client": "ADMIN_PATH=webadmin react-scripts start",
      "build-v2": "NODE_ENV=production webpack --progress"
    },
    "browserslist": {
      "production": [
        ">0.2%",
        "not dead",
        "not op_mini all"
      ],
      "development": [
        "last 1 chrome version",
        "last 1 firefox version",
        "last 1 safari version"
      ]
    },
    "eslintConfig": {
      "extends": [
        "react-app"
      ],
      "rules": {
        "no-undef": "off",
        "react/jsx-no-undef": "off"
      }
    }
  }

yarn manifest: 
  No manifest

Lockfile: 
  No lockfile

Trace: 
  Error: https://registry.yarnpkg.com/@material-ui/core/-/core-4.10.2.tgz: ESOCKETTIMEDOUT
      at ClientRequest.<anonymous> (/usr/local/lib/node_modules/yarn/lib/cli.js:123716:19)
      at Object.onceWrapper (events.js:299:28)
      at ClientRequest.emit (events.js:210:5)
      at TLSSocket.emitRequestTimeout (_http_client.js:690:9)
      at Object.onceWrapper (events.js:299:28)
      at TLSSocket.emit (events.js:210:5)
      at TLSSocket.Socket._onTimeout (net.js:468:8)
      at listOnTimeout (internal/timers.js:531:17)
      at processTimers (internal/timers.js:475:7)