title: SonarQube does not start
body: <p>I got a problem at SonarQube starting! In fact, it doesn't start and I don't get more informations only : </p>
  
  <pre><code>    --&gt; Wrapper Started as Daemon 
  Launching a JVM... 
  Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org
    Copyright 1999-2006 Tanuki Software, Inc.  All Rights Reserved. 
  
  WrapperSimpleApp: Unable to locate the class org.sonar.application.App: java.lang.UnsupportedClassVersionError: org/sonar/application/App : Unsupported major.minor version 51.0 
  
  WrapperSimpleApp Usage: 
    java org.tanukisoftware.wrapper.WrapperSimpleApp {app_class} [app_arguments] 
  
  Where: 
    app_class:      The fully qualified class name of the application to run. 
    app_arguments:  The arguments that would normally be passed to the 
                    application. 
  &lt;-- Wrapper Stopped 
  </code></pre>
  
  <p>Can someone help me?</p>