java.lang.AssertionError: Config file config/Modules/org-netbeans-modules-maven-gsf.xml must be already removed or marked for remove.
        at org.netbeans.modules.autoupdate.services.ModuleDeleterImpl.removeModuleFilesInCluster(ModuleDeleterImpl.java:291)
        at org.netbeans.modules.autoupdate.services.ModuleDeleterImpl.removeModuleFiles(ModuleDeleterImpl.java:278)
        at org.netbeans.modules.autoupdate.services.ModuleDeleterImpl.markForDelete(ModuleDeleterImpl.java:162)
        at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForUninstall.doOperation(OperationSupportImpl.java:389)
        at org.netbeans.api.autoupdate.OperationSupport.doOperation(OperationSupport.java:67)
        at org.netbeans.modules.autoupdate.ui.wizards.UninstallStep.handleAction(UninstallStep.java:192)
        at org.netbeans.modules.autoupdate.ui.wizards.UninstallStep.doAction(UninstallStep.java:152)
        at org.netbeans.modules.autoupdate.ui.wizards.UninstallStep.access$000(UninstallStep.java:67)
        at org.netbeans.modules.autoupdate.ui.wizards.UninstallStep$1.propertyChange(UninstallStep.java:126)
        at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:298)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:291)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:229)
        at java.awt.Component.firePropertyChange(Component.java:8023)
        at org.netbeans.modules.autoupdate.ui.wizards.OperationPanel.access$000(OperationPanel.java:61)
        at org.netbeans.modules.autoupdate.ui.wizards.OperationPanel$1.run(OperationPanel.java:81)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)