fails to load sockjs-node/iframe.html

[chriseugenerodriguez]

package.json

{
  "name": "d",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "sass-lint": "sass-lint -c sass-lint.yml -v -q",
    "ts-lint": "ng lint --type-check --force",
    "lint": "npm run sass-lint && npm run ts-lint",
    "prebuild": "ng build --prod --no-sourcemap && ngc",
    "build": "ts-node src/server.ts",
    "test": "karma start ./karma.conf.js",
    "pree2e": "webdriver-manager update --standalone false --gecko false --quiet",
    "e2e": "protractor ./protractor.conf.js",
    "commit": "commit-wizard"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^4.1.3",
    "@angular/common": "^4.0.0",
    "@angular/compiler": "^4.0.0",
    "@angular/core": "^4.0.0",
    "@angular/forms": "^4.0.0",
    "@angular/http": "^4.0.0",
    "@angular/platform-browser": "^4.0.0",
    "@angular/platform-browser-dynamic": "^4.0.0",
    "@angular/platform-server": "^4.1.3",
    "@angular/router": "^4.0.0",
    "angular2-express-engine": "^2.1.0-rc.1",
    "compression": "^1.6.2",
    "cookie-parser": "^1.4.3",
    "core-js": "^2.4.1",
    "express": "^4.15.3",
    "morgan": "^1.8.2",
    "rxjs": "^5.1.0",
    "zone.js": "^0.8.4"
  },
  "devDependencies": {
    "@angular/cli": "1.1.1",
    "@angular/compiler-cli": "^4.0.0",
    "@angular/language-service": "^4.0.0",
    "@ngx-translate/core": "^7.0.0",
    "@ngx-translate/http-loader": "^0.1.0",
    "@types/jasmine": "2.5.45",
    "@types/node": "~6.0.60",
    "angular-in-memory-web-api": "^0.3.2",
    "autoprefixer": "^6.5.3",
    "bootstrap": "^3.3.7",
    "codelyzer": "~3.0.1",
    "css-loader": "^0.28.1",
    "cssnano": "^3.10.0",
    "exports-loader": "^0.6.3",
    "file-loader": "^0.10.0",
    "font-awesome": "^4.7.0",
    "istanbul-instrumenter-loader": "^2.0.0",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "jquery": "^2.2.4",
    "json-loader": "^0.5.4",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-junit-reporter": "^1.2.0",
    "karma-phantomjs-launcher": "^1.0.4",
    "karma-remap-istanbul": "^0.6.0",
    "karma-xml-reporter": "^0.1.4",
    "less-loader": "^4.0.2",
    "localize-router": "^0.7.0",
    "phantomjs-prebuilt": "^2.1.14",
    "postcss-loader": "^1.3.3",
    "postcss-url": "^5.1.2",
    "pre-git": "^3.15.0",
    "protractor": "~5.1.2",
    "raw-loader": "^0.5.1",
    "restify": "^4.3.0",
    "sass-lint": "^1.10.2",
    "sass-loader": "^6.0.3",
    "script-loader": "^0.7.0",
    "source-map-loader": "^0.2.0",
    "style-loader": "^0.13.1",
    "stylus-loader": "^3.0.1",
    "ts-node": "~3.0.4",
    "tslint": "~5.3.2",
    "url-loader": "^0.5.7",
    "webpack": "~2.4.0",
    "webpack-dev-server": "~2.4.5"
  },
  "config": {
    "pre-git": {
      "enabled": true,
      "msg-pattern": "^(US|DE)\\d+ - .+",
      "commit-msg": "validate-commit-msg",
      "pre-commit": [
        "npm run sass-lint && npm run ts-lint",
        "npm test"
      ],
      "pre-push": [
        "npm e2e"
      ],
      "post-commit": "git status",
      "post-checkout": [],
      "post-merge": []
    }
  }
}