java.lang.IllegalStateException: Too many org.netbeans.modules.python.project.ui.PackageViewChildren$2 (3) in shared RequestProcessor; create your own
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:431)
   at org.netbeans.modules.python.project.ui.PackageViewChildren.add(PackageViewChildren.java:329)
   at org.netbeans.modules.python.project.ui.PackageView.findNonExcludedPackages(PackageView.java:211)
   at org.netbeans.modules.python.project.ui.PackageView.findNonExcludedPackages(PackageView.java:165)
   at org.netbeans.modules.python.project.ui.PackageViewChildren.findNonExcludedPackages(PackageViewChildren.java:287)
   at org.netbeans.modules.python.project.ui.PackageViewChildren.computeKeys(PackageViewChildren.java:279)
   at org.netbeans.modules.python.project.ui.PackageViewChildren.run(PackageViewChildren.java:223)
   at org.openide.util.RequestProcessor$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)