title: Status returned by url [http://localhost:9000/batch_bootstrap/index] is not valid
body: <p>When I am trying to run sonar-scanner, I was not able to start sonarqube and this error is being displayed.</p>
  
  <p>INFO: Scanner configuration file: /sonar-scanner-2.8/conf/sonar-scanner.properties
  INFO: Project root configuration file: NONE
  INFO: SonarQube Scanner 2.8
  INFO: Java 1.8.0_91 Oracle Corporation (64-bit)
  INFO: Mac OS X 10.12.1 x86_64
  INFO: User cache: /.sonar/cache
  ERROR: SonarQube server [<a href="http://localhost:9000]" rel="nofollow noreferrer">http://localhost:9000]</a> can not be reached
  INFO: ------------------------------------------------------------------------
  INFO: EXECUTION FAILURE
  INFO: ------------------------------------------------------------------------
  INFO: Total time: 0.417s
  INFO: Final Memory: 3M/123M
  INFO: ------------------------------------------------------------------------
  ERROR: Error during SonarQube Scanner execution
  org.sonarsource.scanner.api.internal.ScannerException: Unable to execute SonarQube
      at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory$1.run(IsolatedLauncherFactory.java:84)
      at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory$1.run(IsolatedLauncherFactory.java:71)
      at java.security.AccessController.doPrivileged(Native Method)
      at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory.createLauncher(IsolatedLauncherFactory.java:71)
      at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory.createLauncher(IsolatedLauncherFactory.java:67)
      at org.sonarsource.scanner.api.EmbeddedScanner.doStart(EmbeddedScanner.java:218)
      at org.sonarsource.scanner.api.EmbeddedScanner.start(EmbeddedScanner.java:156)
      at org.sonarsource.scanner.cli.Main.execute(Main.java:72)
      at org.sonarsource.scanner.cli.Main.main(Main.java:61)
  Caused by: java.lang.IllegalStateException: Fail to download libraries from server
      at org.sonarsource.scanner.api.internal.Jars.downloadFiles(Jars.java:93)
      at org.sonarsource.scanner.api.internal.Jars.download(Jars.java:70)
      at org.sonarsource.scanner.api.internal.JarDownloader.download(JarDownloader.java:39)
      at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory$1.run(IsolatedLauncherFactory.java:75)
      ... 8 more
  Caused by: java.lang.IllegalStateException: Status returned by url [<a href="http://localhost:9000/batch_bootstrap/index]" rel="nofollow noreferrer">http://localhost:9000/batch_bootstrap/index]</a> is not valid: [404]
      at org.sonarsource.scanner.api.internal.ServerConnection.callUrl(ServerConnection.java:115)
      at org.sonarsource.scanner.api.internal.ServerConnection.downloadString(ServerConnection.java:98)
      at org.sonarsource.scanner.api.internal.Jars.downloadFiles(Jars.java:78)
      ... 11 more
  ERROR: 
  ERROR: Re-run SonarQube Scanner using the -X switch to enable full debug logging.</p>