title: [Angular-CLI-6]Could not determine single project for 'Serve' target
body: <p>I have updated my angular-cli with the help of <code>ng update @angular/cli</code> command. After that, I have got an error as <code>Could not determine single project for 'server' target</code> with following error trace.</p>
  
  <pre><code>Could not determine a single project for the 'serve' target.
  Error: Could not determine a single project for the 'serve' target.
      at ServeCommand.getProjectNamesByTarget (E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:175:19)
      at ServeCommand.&lt;anonymous&gt; (E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:128:51)
      at Generator.next (&lt;anonymous&gt;)
      at E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:7:71
      at new Promise (&lt;anonymous&gt;)
      at __awaiter (E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:3:12)
      at ServeCommand.runArchitectTarget (E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:121:16)
      at ServeCommand.&lt;anonymous&gt; (E:\Angular\Projects\projectName\node_modules\@angular\cli\commands\serve.js:34:25)
      at Generator.next (&lt;anonymous&gt;)
      at E:\Angular\Projects\projectName\node_modules\@angular\cli\commands\serve.js:7:71
  </code></pre>
  
  <p>This behaviour is quite confusing me. 
  For more information i am also adding my <code>package.json</code> here.</p>
  
  <pre><code>{
    "name": "ProjectName",
    "version": "0.0.0",
    "license": "MIT",
    "scripts": {
      "ng": "ng",
      "start": "ng serve",
      "build": "ng build --prod",
      "test": "ng test",
      "lint": "ng lint",
      "e2e": "ng e2e"
    },
    "private": true,
    "dependencies": {
      "@angular/animations": "^5.2.0",
      "@angular/common": "^5.2.0",
      "@angular/compiler": "^5.2.0",
      "@angular/core": "^5.2.0",
      "@angular/forms": "^5.2.0",
      "@angular/http": "^5.2.0",
      "@angular/platform-browser": "^5.2.0",
      "@angular/platform-browser-dynamic": "^5.2.0",
      "@angular/router": "^5.2.0",
      "core-js": "^2.4.1",
      "rxjs": "^5.5.6",
      "zone.js": "^0.8.19"
    },
    "devDependencies": {
      "@angular/cli": "~6.0.8",
      "@angular/compiler-cli": "^5.2.0",
      "@angular/language-service": "^5.2.0",
      "@types/jasmine": "~2.8.3",
      "@types/jasminewd2": "~2.0.2",
      "@types/node": "~6.0.60",
      "codelyzer": "^4.0.1",
      "jasmine-core": "~2.8.0",
      "jasmine-spec-reporter": "~4.2.1",
      "karma": "~2.0.0",
      "karma-chrome-launcher": "~2.2.0",
      "karma-coverage-istanbul-reporter": "^1.2.1",
      "karma-jasmine": "~1.1.0",
      "karma-jasmine-html-reporter": "^0.2.2",
      "protractor": "~5.1.2",
      "ts-node": "~4.1.0",
      "tslint": "~5.9.1",
      "typescript": "~2.5.3",
      "@angular-devkit/build-angular": "~0.6.8"
    }
  }
  </code></pre>
  
  <p>Here, I am getting why this error is occur. Can anyone help me to resolve it?</p>