Response code: 500 - NullPointerException when analyzing projects with SonarQube 5.6

[william...@gmail.com]

We are using SonarQube and have recently upgraded to 5.6, I appear to have a similar issue reported in this link

https://stackoverflow.com/questions/33883322/response-code-500-nullpointerexception-when-analyzing-projects-with-sonarqube 

now my Project cannot be analysed due to the the following error reported in the TFS Build.

ERROR: Error during SonarQube Scanner execution

 java.lang.IllegalStateException: Unable to load component class org.sonar.api.config.Settings

 ○at org.sonar.core.platform.ComponentContainer$ExtendedDefaultPicoContainer.getComponent(ComponentContainer.java:69)

 ○at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:678)

 ○at org.sonar.core.platform.ComponentContainer.getComponentByType(ComponentContainer.java:272)

 ○at org.sonar.batch.scan.ProjectScanContainer.doBeforeStart(ProjectScanContainer.java:112)

 ○at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:140)

 ○at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)

 ○at org.sonar.batch.task.ScanTask.execute(ScanTask.java:47)

 ○at org.sonar.batch.task.TaskContainer.doAfterStart(TaskContainer.java:86)

 ○at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)

 ○at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)

 ○at org.sonar.batch.bootstrap.GlobalContainer.executeTask(GlobalContainer.java:106)

 ○at org.sonar.batch.bootstrapper.Batch.executeTask(Batch.java:119)

 ○at org.sonar.runner.batch.BatchIsolatedLauncher.execute(BatchIsolatedLauncher.java:67)

 ○at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

 ○at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

 ○at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

 ○at java.lang.reflect.Method.invoke(Unknown Source)

 ○at org.sonar.runner.impl.IsolatedLauncherProxy.invoke(IsolatedLauncherProxy.java:61)

 ○at com.sun.proxy.$Proxy0.execute(Unknown Source)

 ○at org.sonar.runner.api.EmbeddedRunner.doExecute(EmbeddedRunner.java:274)

 ○at org.sonar.runner.api.EmbeddedRunner.runAnalysis(EmbeddedRunner.java:165)

 ○at org.sonar.runner.api.EmbeddedRunner.runAnalysis(EmbeddedRunner.java:152)

 ○at org.sonarsource.scanner.cli.Main.runAnalysis(Main.java:118)

 ○at org.sonarsource.scanner.cli.Main.execute(Main.java:80)

 ○at org.sonarsource.scanner.cli.Main.main(Main.java:66)

 Caused by: java.lang.IllegalStateException: Unable to load component class org.sonar.batch.repository.ProjectRepositories

 ○at org.sonar.core.platform.ComponentContainer$ExtendedDefaultPicoContainer.getComponent(ComponentContainer.java:69)

 ○at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:632)

 ○at org.picocontainer.parameters.BasicComponentParameter$1.resolveInstance(BasicComponentParameter.java:118)

 ○at org.picocontainer.parameters.ComponentParameter$1.resolveInstance(ComponentParameter.java:136)

 ○at org.picocontainer.injectors.SingleMemberInjector.getParameter(SingleMemberInjector.java:78)

 ○at org.picocontainer.injectors.ConstructorInjector$CtorAndAdapters.getParameterArguments(ConstructorInjector.java:309)

 ○at org.picocontainer.injectors.ConstructorInjector$1.run(ConstructorInjector.java:335)

 ○at org.picocontainer.injectors.AbstractInjector$ThreadLocalCyclicDependencyGuard.observe(AbstractInjector.java:270)

 ○at org.picocontainer.injectors.ConstructorInjector.getComponentInstance(ConstructorInjector.java:364)

 ○at org.picocontainer.injectors.AbstractInjectionFactory$LifecycleAdapter.getComponentInstance(AbstractInjectionFactory.java:56)

 ○at org.picocontainer.behaviors.AbstractBehavior.getComponentInstance(AbstractBehavior.java:64)

 ○at org.picocontainer.behaviors.Stored.getComponentInstance(Stored.java:91)

 ○at org.picocontainer.DefaultPicoContainer.getInstance(DefaultPicoContainer.java:699)

 ○at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:647)

 ○at org.sonar.core.platform.ComponentContainer$ExtendedDefaultPicoContainer.getComponent(ComponentContainer.java:67)

 ○... 24 more

 Caused by: org.sonarqube.ws.client.HttpException: Error 500 on http://riskitcodemetrics.eu.rabodev.com:9000/batch/project.protobuf?key=PAD

 ○at org.sonarqube.ws.client.BaseResponse.failIfNotSuccessful(BaseResponse.java:34)

 ○at org.sonar.batch.bootstrap.BatchWsClient.failIfUnauthorized(BatchWsClient.java:99)

 ○at org.sonar.batch.bootstrap.BatchWsClient.call(BatchWsClient.java:69)

 ○at org.sonar.batch.repository.DefaultProjectRepositoriesLoader.load(DefaultProjectRepositoriesLoader.java:58)

 ○at org.sonar.batch.repository.ProjectRepositoriesProvider.provide(ProjectRepositoriesProvider.java:39)