title: Null Pointer while using radar-netbeans
body: <p>Could anyone please help me with below exception while doing "Get Issues from Sonar Server"</p>
  
  <pre><code>java.lang.NullPointerException
      at qubexplorer.server.SonarQube.getVersion(SonarQube.java:78)
      at qubexplorer.runner.SonarRunnerProccess.configureProperties(SonarRunnerProccess.java:116)
      at qubexplorer.runner.SonarRunnerProccess.createRunnerForProject(SonarRunnerProccess.java:103)
      at qubexplorer.runner.SonarRunnerProccess.executeRunner(SonarRunnerProccess.java:206)
      at qubexplorer.ui.summary.SonarRunnerTask.execute(SonarRunnerTask.java:99)
      at qubexplorer.ui.summary.SonarRunnerTask.execute(SonarRunnerTask.java:34)
      at qubexplorer.ui.task.TaskExecutor$TaskWorker.doInBackground(TaskExecutor.java:62)
      at javax.swing.SwingWorker$1.call(SwingWorker.java:295)
      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      at javax.swing.SwingWorker.run(SwingWorker.java:334)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  [catch] at java.lang.Thread.run(Thread.java:745)
  </code></pre>
  
  <p>I have installed radar-netbeans-2.6 in Netbeans 8.0.2. I am using sonar qube 6.4. trying to run sonar for maven based spring boot project. Also it is multi-module project and I try it for main project.</p>
  
  <p>Initially it seemed like version related issue. I tried with different sonar qube versions also but getting same error</p>