java.lang.IllegalStateException: Should not acquire Children.MUTEX while holding ProjectManager.mutex()
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1935)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.postRequest(DefaultMutexImplementation.java:979)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.postRequest(DefaultMutexImplementation.java:942)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.postWriteRequest(DefaultMutexImplementation.java:313)
   at org.openide.util.Mutex.postWriteRequest(Mutex.java:388)
   at org.openide.nodes.Children$Keys.applyKeys(Children.java:1582)
   at org.openide.nodes.Children$Keys.setKeys(Children.java:1526)
   at org.netbeans.modules.javascript.cdnjs.ui.logicalview.CdnjsLibraries$CdnjsLibrariesChildren.setKeys(CdnjsLibraries.java:294)
   at org.netbeans.modules.javascript.cdnjs.ui.logicalview.CdnjsLibraries$CdnjsLibrariesChildren.refreshLibraries(CdnjsLibraries.java:273)
   at org.netbeans.modules.javascript.cdnjs.ui.logicalview.CdnjsLibraries$CdnjsLibrariesNodeList.fireChange(CdnjsLibraries.java:178)
   at org.netbeans.modules.javascript.cdnjs.ui.logicalview.CdnjsLibraries$CdnjsLibrariesNodeList.fileFolderCreated(CdnjsLibraries.java:186)
   at org.openide.filesystems.FileChangeImpl.someChange(FileChangeImpl.java:120)
   at org.openide.filesystems.FileChangeImpl.fileFolderCreated(FileChangeImpl.java:181)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEventImpl(FCLSupport.java:175)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapperSingle.dispatchAllEventsSync(FCLSupport.java:224)
   at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEvent(FCLSupport.java:137)
   at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:105)
   at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:1398)
   at org.openide.filesystems.FileSystem$EventDispatcher.run(FileSystem.java:795)
   at org.openide.filesystems.EventControl.dispatchEvent(EventControl.java:84)
   at org.openide.filesystems.FileSystem.dispatchEvent(FileSystem.java:554)
   at org.openide.filesystems.FileObject.dispatchEvent(FileObject.java:644)
   at org.openide.filesystems.FileObject.fireFileFolderCreatedEvent(FileObject.java:604)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.fireFileFolderCreatedEvent(BaseFileObj.java:692)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.createFolderImpl(FolderObj.java:282)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj$2.call(FolderObj.java:324)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj$2.call(FolderObj.java:322)
   at org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem.runAsInconsistent(FileBasedFileSystem.java:122)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.createFolder(FolderObj.java:327)
   at org.openide.filesystems.FileUtil.createFolder(FileUtil.java:712)
   at org.openide.filesystems.FileUtil.createData(FileUtil.java:767)
   at org.netbeans.spi.project.support.ant.ProjectGenerator$1.run(ProjectGenerator.java:147)
   at org.netbeans.spi.project.support.ant.ProjectGenerator$1.run(ProjectGenerator.java:123)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.writeAccess(DefaultMutexImplementation.java:250)
   at org.openide.util.Mutex.writeAccess(Mutex.java:299)
   at org.netbeans.spi.project.support.ant.ProjectGenerator.createProject0(ProjectGenerator.java:123)
   at org.netbeans.spi.project.support.ant.ProjectGenerator.createProject(ProjectGenerator.java:104)
   at org.netbeans.modules.web.clientproject.ant.AntServices.createProject(AntServices.java:78)
   at org.netbeans.modules.web.clientproject.util.ClientSideProjectUtilities.setupProject(ClientSideProjectUtilities.java:155)
   at org.netbeans.modules.web.clientproject.createprojectapi.ClientSideProjectGenerator.createProject(ClientSideProjectGenerator.java:83)
   at org.netbeans.modules.html.ojet.ui.wizard.NewProjectWizardIterator.instantiate(NewProjectWizardIterator.java:175)
   at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:1051)
   at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:605)
   at org.netbeans.modules.project.ui.NewProjectWizard.handleInstantiate(NewProjectWizard.java:76)
   at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:439)
   at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:253)
   at org.openide.loaders.TemplateWizardIteratorWrapper$ProgressInstantiatingIterator.instantiate(TemplateWizardIteratorWrapper.java:180)
   at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:1626)
   at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1570)
   at org.openide.WizardDescriptor.access$2300(WizardDescriptor.java:92)
   at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:2257)
   at org.openide.util.RequestProcessor$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)