java.lang.IllegalArgumentException: Key contains code point U+0000
   at java.util.prefs.AbstractPreferences.get(AbstractPreferences.java:296)
   at org.netbeans.modules.maven.queries.MavenFileOwnerQueryImpl.registerCoordinates(MavenFileOwnerQueryImpl.java:176)
   at org.netbeans.modules.maven.ProjectOpenedHookImpl.registerWithSubmodules(ProjectOpenedHookImpl.java:454)
   at org.netbeans.modules.maven.ProjectOpenedHookImpl.projectOpened(ProjectOpenedHookImpl.java:161)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:85)
   at org.netbeans.modules.project.ui.OpenProjectList.notifyOpened(OpenProjectList.java:1298)
   at org.netbeans.modules.project.ui.OpenProjectList.doOpenProject(OpenProjectList.java:1379)
   at org.netbeans.modules.project.ui.OpenProjectList.open(OpenProjectList.java:823)
   at org.netbeans.modules.project.ui.OpenProjectList$6.run(OpenProjectList.java:675)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)