I have 2 svn sources defined in upstream project, and 2 sources in feature branch.
When trying to rebase from upstream, plugin fails

Result of Last Rebase

java.lang.NullPointerException
at jenkins.plugins.svnmerge.FeatureBranchProperty.rebase(FeatureBranchProperty.java:148)
at jenkins.plugins.svnmerge.RebaseAction.perform(RebaseAction.java:105)
at jenkins.plugins.svnmerge.RebaseAction.perform(RebaseAction.java:25)
at jenkins.plugins.svnmerge.AbstractSvnmergeTaskAction$WorkerThread.perform(AbstractSvnmergeTaskAction.java:105)
at hudson.model.TaskThread.run(TaskThread.java:127)
at jenkins.plugins.svnmerge.AbstractSvnmergeTaskAction$TaskImpl$1.run(AbstractSvnmergeTaskAction.java:161)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:238)

Works fine if having 1 svn source