A build manually triggered with the gerrit-trigger plugin failed with the following output:

Manually triggered by user anonymous for Gerrit: http://localhost:8010/1
Checkout:workspace / /var/lib/jenkins/jobs/Playground-gerrit/workspace - hudson.remoting.LocalChannel@bd5d765
Using strategy: Gerrit Trigger
Checkout:workspace / /var/lib/jenkins/jobs/Playground-gerrit/workspace - hudson.remoting.LocalChannel@bd5d765
Fetching changes from the remote Git repository
Fetching upstream changes from ssh://xxxx@ubisrv1:29418/playground.git
Commencing build of Revision 636920c6a48c59f5cdf1dee1d3346ecc1dde4821 (null)
Checking out Revision 636920c6a48c59f5cdf1dee1d3346ecc1dde4821 (null)
FATAL: null
java.lang.NullPointerException
at com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTriggerBuildChooser.getFirstParent(GerritTriggerBuildChooser.java:108)
at com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTriggerBuildChooser.prevBuildForChangelog(GerritTriggerBuildChooser.java:79)
at hudson.plugins.git.GitSCM.computeChangeLog(GitSCM.java:1210)
at hudson.plugins.git.GitSCM.access$700(GitSCM.java:57)
at hudson.plugins.git.GitSCM$4.invoke(GitSCM.java:1175)
at hudson.plugins.git.GitSCM$4.invoke(GitSCM.java:1120)
at hudson.FilePath.act(FilePath.java:758)
at hudson.FilePath.act(FilePath.java:740)
at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1120)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1182)
at hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:537)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:425)
at hudson.model.Run.run(Run.java:1376)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:146)