java.beans.PropertyVetoException: Not allowed
   at org.openide.text.CloneableEditorSupport$Listener.vetoableChange(CloneableEditorSupport.java:2843)
   at org.netbeans.editor.BaseDocument.notifyModify(BaseDocument.java:1828)
Caused: javax.swing.text.BadLocationException: remove() vetoed
   at org.netbeans.editor.BaseDocument.notifyModifyCheckStart(BaseDocument.java:987)
   at org.netbeans.editor.BaseDocument.remove(BaseDocument.java:876)
   at javax.swing.text.AbstractDocument.replace(AbstractDocument.java:652)
   at org.netbeans.modules.xml.xdm.visitor.Utils.replaceDocument(Utils.java:111)
   at org.netbeans.modules.xml.xdm.visitor.Utils.replaceDocument(Utils.java:123)
Caused: java.lang.IllegalStateException: It is possible that model source file is locked
   at org.netbeans.modules.xml.xdm.XDMModel.flushDocument(XDMModel.java:870)
   at org.netbeans.modules.xml.xdm.XDMModel.flush(XDMModel.java:145)
   at org.netbeans.modules.xml.xdm.xam.XDMAccess.flush(XDMAccess.java:110)
   at org.netbeans.modules.xml.xam.AbstractModel.endTransaction(AbstractModel.java:326)
   at org.netbeans.modules.xml.xam.AbstractModel.endTransaction(AbstractModel.java:313)
   at org.netbeans.modules.maven.customizer.CustomizerProviderImpl$OptionListener.actionPerformed(CustomizerProviderImpl.java:313)
   at org.netbeans.modules.project.uiapi.CustomizerDialog$OptionListener$1.run(CustomizerDialog.java:246)
   at org.openide.util.Mutex.writeAccess(Mutex.java:394)
   at org.netbeans.modules.project.uiapi.CustomizerDialog$OptionListener.actionPerformed(CustomizerDialog.java:244)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
   at java.awt.Component.processMouseEvent(Component.java:6216)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
   at java.awt.Component.processEvent(Component.java:5981)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4583)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4413)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4556)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4220)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4150)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2475)
   at java.awt.Component.dispatchEvent(Component.java:4413)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)
   at java.awt.Dialog$1.run(Dialog.java:1051)
   at java.awt.Dialog$3.run(Dialog.java:1103)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.Dialog.show(Dialog.java:1101)
   at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:985)
   at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1019)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1007)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:115)
   at org.openide.util.Mutex.doEventAccess(Mutex.java:1355)
   at org.openide.util.Mutex.readAccess(Mutex.java:268)
   at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:992)
   at java.awt.Component.show(Component.java:1516)
   at java.awt.Component.setVisible(Component.java:1468)
   at java.awt.Window.setVisible(Window.java:841)
   at java.awt.Dialog.setVisible(Dialog.java:991)
   at org.netbeans.modules.maven.customizer.CustomizerProviderImpl.showCustomizer(CustomizerProviderImpl.java:179)
   at org.netbeans.modules.maven.customizer.CustomizerProviderImpl.showCustomizer(CustomizerProviderImpl.java:138)
   at org.netbeans.modules.maven.customizer.CustomizerProviderImpl.showCustomizer(CustomizerProviderImpl.java:133)
   at org.netbeans.modules.project.ui.actions.CustomizeProject.actionPerformed(CustomizeProject.java:149)
   at org.netbeans.modules.project.ui.actions.LookupSensitiveAction.actionPerformed(LookupSensitiveAction.java:166)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1225)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1266)
   at java.awt.Component.processMouseEvent(Component.java:6216)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
   at java.awt.Component.processEvent(Component.java:5981)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4583)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4413)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4556)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4220)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4150)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2475)
   at java.awt.Component.dispatchEvent(Component.java:4413)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)