title: Specified module does not exist Angular 6
body: <p>Can you tell me why I cannot use below CLI? It says <code>Specified module does not exist</code>. Same error for both CLI commands.  </p>
  
  <p><strong>Note:</strong> I have upgraded this app from <code>ng 5</code> to <code>ng 6</code>. Is that this error due to some issue on upgrading?</p>
  
  <pre><code>ng generate component messages --module=core
  
  ng generate component messages --module=app
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/noK8E.png" rel="noreferrer"><img src="https://i.stack.imgur.com/noK8E.png" alt="enter image description here"></a></p>
  
  <p><em>app.core.module.ts</em></p>
  
  <pre><code>export class CoreModule {
    static forRoot(): ModuleWithProviders {
      return {
        ngModule: CoreModule
      };
    }
  }
  </code></pre>
  
  <p><em>app.module.ts</em></p>
  
  <pre><code>export class AppModule { }
  </code></pre>
  
  <p><em>ng --version</em></p>
  
  <pre><code>Angular CLI: 6.0.8
  Node: 8.11.2
  OS: win32 x64
  Angular: 6.0.7
  ... animations, common, compiler, compiler-cli, core, forms
  ... http, language-service, platform-browser
  ... platform-browser-dynamic, platform-server, router
  ... service-worker
  
  Package                           Version
  -----------------------------------------------------------
  @angular-devkit/architect         0.6.8
  @angular-devkit/build-angular     0.6.8
  @angular-devkit/build-optimizer   0.6.8
  @angular-devkit/core              0.6.8
  @angular-devkit/schematics        0.6.8
  @angular/cdk                      6.3.2
  @angular/cli                      6.0.8
  @angular/material                 6.3.2
  @angular/tsc-wrapped              0.5.2
  @ngtools/webpack                  6.0.8
  @schematics/angular               0.6.8
  @schematics/update                0.6.8
  rxjs                              6.2.1
  typescript                        2.7.2
  webpack                           4.8.3
  </code></pre>
  
  <p><em>package.json</em></p>
  
  <pre><code>{
    "name": "Abc",
    "version": "0.0.1",
    "license": "MIT",
    "scripts": {
      "ng": "ng",
      "start": "ng serve",
      "build": "run-s build:client build:aot build:server",
      "buildclient": "ng build --prod --build-optimizer --app 0",
      "build:aot": "ng build --aot --app 1",
      "build:server": "webpack -p",
      "test": "ng test",
      "lint": "ng lint",
      "e2e": "ng e2e",
      "dev": "ng build --prod =cd dist http-server",
      "build:firebase": "ng build --prod &amp;&amp; cp src/manifest_app.json dist &amp;&amp; firebase deploy"
    },
    "private": true,
    "dependencies": {
      "@angular/animations": "6.0.7",
      "@angular/cdk": "^6.3.2",
      "@angular/common": "6.0.7",
      "@angular/compiler": "6.0.7",
      "@angular/core": "6.0.7",
      "@angular/forms": "6.0.7",
      "@angular/http": "6.0.7",
      "@angular/material": "^6.3.2",
      "@angular/platform-browser": "6.0.7",
      "@angular/platform-browser-dynamic": "6.0.7",
      "@angular/platform-server": "6.0.7",
      "@angular/router": "6.0.7",
      "@angular/service-worker": "6.0.7",
      "@auth0/angular-jwt": "^2.0.0",
      "@cloudinary/angular": "^2.1.1",
      "@jaspero/ng2-confirmations": "^0.3.3",
      "@ng-bootstrap/ng-bootstrap": "^1.0.0-beta.8",
      "@ng-select/ng-select": "^0.36.2",
      "@nguniversal/module-map-ngfactory-loader": "^5.0.0",
      "@types/moment": "^2.13.0",
      "angular2-useful-swiper": "^5.0.1",
      "cloudinary-core": "^2.4.0",
      "core-js": "^2.4.1",
      "hammerjs": "^2.0.8",
      "jquery": "^3.2.1",
      "moment": "^2.20.1",
      "ng-pwa-tools": "0.0.15",
      "ng2-cloudinary": "^0.9.2",
      "ng2-file-upload": "^1.3.0",
      "ng2-img-max": "^2.1.15",
      "ng4-geoautocomplete": "^0.1.0",
      "ng4-loading-spinner": "^1.1.1",
      "ngx-bootstrap": "^2.0.2",
      "ngx-toastr": "^6.5.0",
      "ngx-youtube-player": "^0.1.0",
      "raven-js": "^3.26.3",
      "rxjs": "^6.2.1",
      "rxjs-compat": "^6.2.1",
      "swiper": "^3.4.2",
      "webrtc-adapter": "^6.1.4",
      "zone.js": "^0.8.26"
    },
    "devDependencies": {
      "@angular/cli": "6.0.8",
      "@angular/compiler-cli": "6.0.7",
      "@angular/language-service": "6.0.7",
      "@types/googlemaps": "^3.30.8",
      "@types/jasmine": "~2.5.53",
      "@types/jasminewd2": "~2.0.2",
      "@types/jquery": "^3.2.18",
      "@types/node": "~6.0.60",
      "codelyzer": "~3.2.0",
      "jasmine-core": "~2.6.2",
      "jasmine-spec-reporter": "~4.1.0",
      "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-jasmine-html-reporter": "^0.2.2",
      "npm-run-all": "^4.1.2",
      "protractor": "~5.1.2",
      "ts-loader": "^3.5.0",
      "ts-node": "~3.2.0",
      "tslint": "~5.7.0",
      "typescript": "2.7.2",
      "webpack-node-externals": "^1.6.0",
      "@angular-devkit/build-angular": "~0.6.8"
    }
  }
  </code></pre>